source: MondoRescue/branches/2.2.9/mondo/src/common/libmondo-cli.c @ 2224

/***************************************************************************
$Id: libmondo-cli.c 2224 2009-06-17 02:43:35Z bruno $
*******************************************************************/

/**
 * @file
 * Functions for handling command-line arguments passed to mondoarchive.
 */

/** @def BOOT_LOADER_CHARS The characters allowed for boot loader on this platform. */

#include <pthread.h>
#include "my-stuff.h"
#include "mr_mem.h"
#include "mr_string.h"
#include "mondostructures.h"
#include "libmondo-cli-EXT.h"
#include "libmondo.h"

extern int g_loglevel;
extern bool g_text_mode;
extern char g_startdir[MAX_STR_LEN];    ///< ????? @bug ?????
extern char *MONDO_OPTIONS;

/*@ file pointer **************************************************/
extern FILE *g_tape_stream;

/*@ long long *****************************************************/
extern long long g_tape_posK;

/*@ long **********************************************************/
extern long g_noof_sets;

/*@ bool******** **************************************************/
bool g_debugging = FALSE;       ///< ????? @bug ????? @ingroup globalGroup
bool g_running_live = FALSE;    ///< ????? @bug ????? @ingroup globalGroup
extern bool g_cd_recovery;

extern void setup_tmpdir(char *path);
extern double g_kernel_version;
extern int g_current_media_number;
extern pid_t g_main_pid;
extern char *resolve_softlinks_to_get_to_actual_device_file(char *);

/* Stuff that handles the -I and -E option when a whole disk DSF is used */
typedef struct mounted_fs_struct {
    char device[MAX_STR_LEN];       /* The name of the device */
    char mount_point[MAX_STR_LEN];  /* The devices mount point */
    unsigned char check;            /* 1 == included on DSF */
    struct mounted_fs_struct *next;
} MOUNTED_FS_STRUCT;
static MOUNTED_FS_STRUCT *DSF_Head = NULL;      /* Points to the first entry of mounted_fs_struct list */
static MOUNTED_FS_STRUCT *DSF_Tail = NULL;      /* Points to the last entry of mounted_fs_struct list */
static void add_mounted_fs_struct (MOUNTED_FS_STRUCT *DSFptr);
static void free_mounted_fs_list (void);
static int get_dsf_mount_list (const char *dsf, char **included_dsf_list, char **excluded_dsf_list);
static int create_list_of_non_NFS_mounted_file_systems (void);
static MOUNTED_FS_STRUCT *find_mount_point_in_list (char *mount_point);
static MOUNTED_FS_STRUCT *find_device_in_list (char *device);

/* Do we use extended attributes and acl ? 
 * By default no, use --acl & --attr options to force their usage */
extern char *g_getfacl;
extern char *g_getfattr;

/* Reference to global bkpinfo */
extern struct s_bkpinfo *bkpinfo;

extern void free_MR_global_filenames(void);

/**
 * @addtogroup cliGroup
 * @{
 */
/**
 * Populate @p bkpinfo from the command-line parameters stored in @p argc and @p argv.
 * @param argc The argument count, including the program name; @p argc passed to main().
 * @param argv The argument vector; @p argv passed to main().
 * @param bkpinfo The backup information structure to populate.
 * @return The number of problems with the command line (0 for success).
 */
int
handle_incoming_parameters(int argc, char *argv[])
{
    /*@ int *** */
    int res = 0;
    int retval = 0;
    int i = 0, j;

    /*@ buffers *************** */
    char *tmp;
    char flag_val[128][MAX_STR_LEN];
    bool flag_set[128];

    tmp = malloc(9*MAX_STR_LEN);
    for (i = 0; i < 128; i++) {
        flag_val[i][0] = '\0';
        flag_set[i] = FALSE;
    }
    for (j = 1; j <= MAX_NOOF_MEDIA; j++) {
        bkpinfo->media_size[j] = 650;
    }                           /* default */
    res =
        retrieve_switches_from_command_line(argc, argv, flag_val,
                                            flag_set);
    retval += res;
    if (!retval) {
        res = process_switches(flag_val, flag_set);
        retval += res;
    }
/*
  if (!retval)
    {
*/
    log_msg(3, "Switches:-");
    for (i = 0; i < 128; i++) {
        if (flag_set[i]) {
            sprintf(tmp, "-%c %s", i, flag_val[i]);
            log_msg(3, tmp);
        }
    }
//    }
    sprintf(tmp, "rm -Rf %s/tmp.mondo.*", bkpinfo->tmpdir);
    paranoid_system(tmp);
    sprintf(tmp, "rm -Rf %s/mondo.scratch.*", bkpinfo->scratchdir);
    paranoid_system(tmp);
    sprintf(bkpinfo->scratchdir + strlen(bkpinfo->scratchdir),
            "/mondo.scratch.%ld", random() % 32767);
    sprintf(tmp, "mkdir -p %s/tmpfs", bkpinfo->tmpdir);
    paranoid_system(tmp);
    sprintf(tmp, "mkdir -p %s", bkpinfo->scratchdir);
    paranoid_system(tmp);
    paranoid_free(tmp);
    return (retval);
}




/**
 * Store the sizespec(s) stored in @p value into @p bkpinfo.
 * @param bkpinfo The backup information structure; the @c bkpinfo->media_size field will be populated.
 * @param value The sizespec (e.g. "2g", "40m").
 * @return 0, always.
 * @bug Return code not needed.
 */
int process_the_s_switch(char *value)
{
    int j;
    char tmp[MAX_STR_LEN], *p, comment[MAX_STR_LEN];

    assert(bkpinfo != NULL);
    assert(value != NULL);

    bkpinfo->media_size[0] = -1;    /* dummy value */
    for (j = 1, p = value; j < MAX_NOOF_MEDIA && strchr(p, ',');
         j++, p = strchr(p, ',') + 1) {
        strncpy(tmp, p, MAX_STR_LEN);
        *(strchr(tmp, ',')) = '\0';
        bkpinfo->media_size[j] = friendly_sizestr_to_sizelong(tmp);
        sprintf(comment, "media_size[%d] = %ld", j,
                bkpinfo->media_size[j]);
        log_msg(3, comment);
    }
    for (; j <= MAX_NOOF_MEDIA; j++) {
        bkpinfo->media_size[j] = friendly_sizestr_to_sizelong(p);
    }
//      bkpinfo->media_size[0] = bkpinfo->media_size[MAX_NOOF_MEDIA];
    for (j = 1; j <= MAX_NOOF_MEDIA; j++) {
        if (bkpinfo->media_size[j] <= 0) {
            log_msg(1, "You gave media #%d an invalid size\n", j);
            return (-1);
        }
    }
    return (0);
}

/**
 * Frees the memory for all of the structures on the linked list of 
 * all of the non-NFS mounted file systems.
 */
static void free_mounted_fs_list (void) {
    MOUNTED_FS_STRUCT *DSFptr = NULL;
    MOUNTED_FS_STRUCT *DSFnext = NULL;
 
    DSFptr = DSF_Head;
    while (DSFptr != NULL) {
        DSFnext = DSFptr->next;
        paranoid_free(DSFptr);
        DSFptr = DSFnext;
    }
    DSF_Head = NULL;
    DSF_Tail = NULL;
}

/**
 * Creates a singly linked list of all of the non-NFS mounted file systems.
 * @param DSFptr A pointer  to the structure MOUNTED_FS_STRUCT used to hold 
 * the list of mounted file systems. 
 * @return None. 
 */
static void add_mounted_fs_struct (MOUNTED_FS_STRUCT *DSFptr)
{
    assert (DSFptr);
    if (DSF_Head == NULL) {
        DSF_Head = DSFptr;
    } else {
        DSF_Tail->next = DSFptr;
    }
    DSFptr->next = NULL;
    DSF_Tail = DSFptr;
}

/**
 * Find the structure, in the singly linked list of all of the non-NFS 
 * mounted file systems, that contains the specified device.
 * @param device The device to find 
 * @return NULL if it didn't find the device, a pointer to the
 * structure if it did. 
 */
static MOUNTED_FS_STRUCT *find_device_in_list (char *device)
{
    MOUNTED_FS_STRUCT *DSFptr = NULL;

    DSFptr = DSF_Head;
    while (DSFptr != NULL) {
        if (!strcmp(DSFptr->device, device)) {
            break;
        }
        DSFptr = DSFptr->next;
    }
    return (DSFptr);
}

/**
 * Find the structure, in the singly linked list of all of the non-NFS 
 * mounted file systems, that contains the specified mount point.
 * @param mount_point The mount point to find 
 * @return NULL is it didn't find the mount point, a pointer to the
 * structure if it did. 
 */
static MOUNTED_FS_STRUCT *find_mount_point_in_list (char *mount_point)
{
    MOUNTED_FS_STRUCT *DSFptr = NULL;

    DSFptr = DSF_Head;
    while (DSFptr != NULL) {
        if (!strcmp(DSFptr->mount_point, mount_point)) {
            break;
        }
        DSFptr = DSFptr->next;
    }
    return (DSFptr);
}

/**
 * Creates a linked list of all of the non-NFS mounted file systems.
 * We use a linked list because we don't know how many  mounted file
 * there are (and there can be a lot).
 * @return 0 on success and greated than 0 on failure. 
 */
static int create_list_of_non_NFS_mounted_file_systems (void)
{
    int i = 0;
    int mount_cnt = 0;
    char *mounted_file_system = NULL;
    char *command = NULL;
    char *token = NULL;
    char token_chars[] =" :\t\r\f\a\0";
    MOUNTED_FS_STRUCT *DSFptr = NULL;

    free_mounted_fs_list();
    /********
    * Find the number of mounted file system entries and their respective mount points. 
    * I can't return all of the entries as one string because it's length can be longer
    * than MAX_STR_LEN which is used in call_program_and_get_last_line_of_output(). 
    * So start looping and get the number of  mounted file systems and query them one by one.
    ********/
    /* Get the number of mounted file systems ((those that start with "/dev/" */
    mr_asprintf(&command, "mount 2>/dev/null | awk '{if($1 ~ \"^/dev/\"){print $0}}'|wc -l");
    log_msg(5, "Running: %s", command);
    mr_asprintf(&mounted_file_system, "%s", call_program_and_get_last_line_of_output(command));
    paranoid_free(command);

    mount_cnt = atoi(mounted_file_system);
    log_msg (5, "mount_cnt: %d", mount_cnt);
    paranoid_free(mounted_file_system);

    for (i=mount_cnt; i > 0; i--) {
        mr_asprintf(&command, "mount 2>/dev/null | awk '{if($1 ~ \"^/dev/\"){print $1,$3}}'|head -n %d", i);
        log_msg(5, "Running: %s", command);
        mr_asprintf(&mounted_file_system, "%s", call_program_and_get_last_line_of_output(command));
        paranoid_free(command);

        log_msg (5, "mounted_file_system: %s", mounted_file_system);
        if ((token = strtok(mounted_file_system, token_chars)) == NULL) {
            log_msg (4, "Could not get the list of mounted file systems");
            paranoid_free(mounted_file_system);
            return (1);
        }
        log_msg (5, "token: %s", token);
        while (token != NULL) {
            log_msg (5, "token: %s", token);
            if ((DSFptr = (MOUNTED_FS_STRUCT *) calloc(1, sizeof(MOUNTED_FS_STRUCT))) == NULL) {
                fatal_error ("Cannot allocate memory");
            }
            add_mounted_fs_struct(DSFptr);
            strcpy(DSFptr->device, token);
            if ((token = strtok(NULL, token_chars)) == NULL) {
                log_msg (5, "Ran out of entries on the mounted file systems list");
                paranoid_free(mounted_file_system);
                return (1);
            }
            log_msg (5, "token: %s", token);
            strcpy(DSFptr->mount_point, token);
            token = strtok(NULL, token_chars); 
        }
        paranoid_free(mounted_file_system);
    }
    /********
    * DSFptr = DSF_Head;
    * while (DSFptr != NULL) {
    * printf ("Dev: %s  MP: %s  Check: %d\n", DSFptr->device, DSFptr->mount_point, DSFptr->check);
    * DSFptr = DSFptr->next;
    * }
    ********/
    return (0);
}

/**
 * Given a whole disk device special file, determine which mounted file systems
 * are on the dsf's partitions and which mounted file systems are not.
 * @param dsf The whole disk device special file.
 * @param included_dsf_list A char pointer used to hold the list of mount points
 * that are on the dsf. Memory for the array will be allocated within the function.
 * @param excluded_dsf_list A char pointer used to hold the list of mount points
 * that are not on the dsf. Memory for the array will be allocated within the function.
 * @return 0 on success, -1 if no device special file was passed in, -2 if a device
 * special file was passed in but it has no partitions on it, or 1 on failure 
 */
static int get_dsf_mount_list (const char *dsf, char **included_dsf_list, char **excluded_dsf_list) {
    int i = 0;
    int c = 0;
    int lastpos = 0;
    char VG[MAX_STR_LEN];
    char *tmp = NULL;
    char *command = NULL;
    char *partition_list = NULL;
    char partitions[64][MAX_STR_LEN];
    char *mount_list = NULL;
    char *token = NULL;
    char token_chars[] =" \t\r\f\a\0";
    MOUNTED_FS_STRUCT *DSFptr = NULL;

    memset((char *)partitions, 0, sizeof(partitions));

    log_msg(5, "dsf: %s", dsf);
    
    /********
    * See if a device special file was passed in (i.e. it must start with /dev/
    ********/
    if (strncmp(dsf, "/dev/", 5)) {
        log_msg (5, "%s does not start with /dev/ and (probably) is not a  device special file", dsf);
        return (-1);
    }
    log_msg(5, "  %s looks like a device special file", dsf);
    /* Verify that the dsf exists */ 
    mr_asprintf(&command, "ls -al %s 2>/dev/null | wc -l", dsf);
    log_msg(5, "  Executing: %s", command);
    mr_asprintf(&tmp, "%s", call_program_and_get_last_line_of_output(command));
    paranoid_free(command);

    log_msg(5, "  Return value: %s", tmp);
    c = atoi(tmp);
    paranoid_free(tmp);

    if (!c) {
        log_to_screen("Cannot find device special file %s", dsf);
        return (1);
    }
    log_msg(5, "  %s device special file exists", dsf);
    
    /* Get a list of the mounted file systems */
    if (create_list_of_non_NFS_mounted_file_systems()) {
        log_to_screen ("Could not get the list of mounted file systems");
        return (1);
    }
    log_msg (5, "Processing dsf: %s", dsf);
    /********
    * Get a list of the dsf's partitions. There could be no partitions on the disk
    * or a dsf of a partition was passed in (e.g. /dev/sda1 instead of /dev/sda).
    * Either way, it's an error.
    ********/
    mr_asprintf(&command, 
      "parted2fdisk -l %s 2>/dev/null|grep -E \"^/dev/\"|awk '{printf(\"%%s \", $1)}END{print \"\"}'", dsf);
    log_msg(4, "Executing: %s", command);
    mr_asprintf(&partition_list, "%s", call_program_and_get_last_line_of_output(command));
    paranoid_free(command);
    log_msg(4, "Partition list for %s: %s", dsf, partition_list);
    if (!strlen(partition_list)) {
        /* There were no partitions on the disk */
        log_msg(4, "Cannot find any partitions on device special file %s", dsf);
        return (-2);
    }

    /* Fill the partition list */
    i = 0;
    lastpos = 0;
    while ((token = mr_strtok(partition_list, token_chars, &lastpos)) != NULL) {
        log_msg (5, "Found partition: %s", token);
        strcpy(partitions[i++], token);
    }
    paranoid_free(partition_list);
  
    /********
     * At this point, we have a list of all of the partitions on the dsf. Now try to
     * see which partitions have a file system on them. 
     *
     * Loop through each partition on the disk and:
     *
     * - If the partition is swap, it ignores it.
     *
     * - If the partition is mounted (e.g. /dev/sda1 is mounted on /boot), it adds an entry 
     *  to the linked list, copies to it the device name and mount point, and sets check == 1.
     *
     * - If the partition is part of a Volume Group that has Logical Volumes mounted, it adds 
     *  an entry to the linked list for each mounted Logical Volume in that Volume Group, copying 
     *  to it the device name and mount point, and sets check == 1. Note that if the Volume Group 
     *  contains more than one disk, it will still add the entry even if the Logical Volume's 
     *  extents are not on the dsf that was passed in to the function. For example, Volume Group 
     *  VolGroup00 contains the disks /dev/sda1 and /dev/sdb1, and the Logical Volumes LogVol01, 
     *  which is mounted on /var and has all of its extents on /dev/sda1, and LogVol02, which is 
     *  mounted as /usr and has all of its extents on /dev/sdb1. If you pass /dev/sda into the 
     *  function, both /var and /usr will be archived even though /usr is actually on/dev/sdb.
     *
     * - If the partition is part of a Volume Group that has Logical Volumes used in a mounted 
     *  software raid device, it adds an entry to the linked list, copies to it the software raid 
     *  device name and mount point, and sets check == 1.
     *
     * - If the partition is part of a mounted software raid device, it adds an entry to the linked 
     *  list, copies to it the software raid device name and mount point, and sets check == 1.
     *
     ********/
    for (i=0; strlen(partitions[i]); i++) {
        log_msg(4, "Processing partition: %s", partitions[i]);
        /* See if it's swap. If it is, ignore it. */
        mr_asprintf(&command,
          "parted2fdisk -l %s 2>/dev/null | awk '{if(($1==\"%s\")&&(toupper($0) ~ \"SWAP\")){print $1;exit}}'", 
          dsf, partitions[i]);
        log_msg(4, "  Running: %s", command);
        mr_asprintf(&tmp, "%s", call_program_and_get_last_line_of_output(command));
        paranoid_free(command);
        log_msg(4, "  Return value: %s", tmp);
        c = strlen(tmp);
        paranoid_free(tmp);
        if (c) {
            log_msg(4, "It's swap. Ignoring partition %s", partitions[i]); 
            continue;
        } 
        /* It's not swap. See if we can find the mount point from the mount command. */
        mr_asprintf(&command, "mount 2>/dev/null | awk '{if((NF>0)&&($1==\"%s\")){print $3}}'", partitions[i]);
        mr_asprintf(&tmp, "%s", call_program_and_get_last_line_of_output(command));
        paranoid_free(command);
        if (strlen(tmp)) {
            log_msg(4, "  %s is mounted: %s", partitions[i], tmp);
            if ((DSFptr = find_mount_point_in_list(tmp)) == NULL) {
                log_msg (4, "Can't find mount point %s in mounted file systems list", tmp);
                paranoid_free(tmp);
                return (1);
            }
            DSFptr->check = 1;
            paranoid_free(tmp);
            continue;
        }
        paranoid_free(tmp);
        /* It's not swap and it's not mounted. See if it's LVM */
        log_msg(4, "  It's not mounted. Checking to see if it's LVM...");
        /* Get the partition ID; 8e for LVM */
        mr_asprintf(&command, "parted2fdisk -l %s |awk '{if($1 ~ \"^%s\"){print $5}}'", dsf, partitions[i]);
        log_msg(4, "  Running: %s", command);
        mr_asprintf(&tmp, "%s", call_program_and_get_last_line_of_output(command));
        paranoid_free(command);
        if (strlen(tmp)) {
            log_msg(4, "  Partition ID: %s", tmp);
            if (!strcasecmp(tmp, "8e")) { 
                /* It's LVM: Find the VG it's in */
                log_msg(4, "  It's LVM: Find the VG it's in...");
                mr_asprintf(&command, "pvdisplay -v %s 2>/dev/null|grep \"VG Name\"|awk '{print $NF}'", partitions[i]);
                log_msg(4, "  Running: %s", command);
                strcpy(VG, call_program_and_get_last_line_of_output(command));
                paranoid_free(command);
                log_msg(4, "  Volume Group: %s", VG);
                if (strlen(VG)) {
                    /* Found the Volume Group. Now find all of the VG's mount points */
                    log_msg(4, "  Found the Volume Group. Now find all of the VG's mount points");
                    mr_asprintf(&command, 
                      "mount 2>/dev/null|grep -E \"/dev/mapper/%s-|/dev/%s/\"|awk '{printf(\"%%s \",$3)}END{print \"\"}'", 
                      VG, VG);
                    log_msg(4, "  Running: %s", command);
                    mr_asprintf(&mount_list, "%s", call_program_and_get_last_line_of_output(command));
                    paranoid_free(command);
                    log_msg(4, "  VG %s mount_list: %s", VG, mount_list);
                    lastpos = 0;
                    while ((token = mr_strtok(mount_list, token_chars, &lastpos)) != NULL) {
                        log_msg (5, "mount point token: %s", token);
                        if ((DSFptr = find_mount_point_in_list(token)) == NULL) {
                            log_msg (4, "Can't find mount point %s in mounted file systems list", token);
                            paranoid_free(tmp);
                            return (1);
                        }
                        DSFptr->check = 1;
                    }
                    /********
                     * Now we want to see if there are any software raid devices using
                     * any of the Logical Volumes on the Volume Group.
                     *******/
                    paranoid_free(mount_list);
                    mr_asprintf(&command, "%s",
                        "cat /proc/mdstat|grep -iv Personal|awk '{if($0~\"^.*[ ]+:\"){printf(\"/dev/%s \", $1)}}END{print \"\"}'");
                    log_msg (5, "Running: %s", command);
                    mr_asprintf(&mount_list, "%s", call_program_and_get_last_line_of_output(command));
                    paranoid_free(command);
                    log_msg(4, "  Software raid device list: %s", mount_list);   
                    lastpos = 0;
                    while ((token = mr_strtok(mount_list, token_chars, &lastpos)) != NULL) {
                        mr_asprintf(&command, "mdadm --detail %s 2>/dev/null | grep -c %s", token, VG); 
                        log_msg (5, "Running: %s", command);
                        paranoid_free(tmp);
                        mr_asprintf(&tmp, "%s", call_program_and_get_last_line_of_output(command));
                        paranoid_free(command);
                        log_msg(4, "Number of Software raid device: %s", tmp);
                        if (atoi(tmp)) {
                            /* This device is on our disk */
                            if ((DSFptr = find_device_in_list(token)) == NULL) {
                                log_msg (4, "Can't find device %s in mounted file systems list", token);
                                paranoid_free(tmp);
                                return (1);
                            }
                            DSFptr->check = 1;
                        }
                    }
                    paranoid_free(mount_list);
                } else {
                    log_msg (4, "Error finding Volume Group for partition %s", partitions[i]);
                    paranoid_free(tmp);
                    return (1);
                }
                paranoid_free(tmp);
                continue;
            }
        } else {
            log_msg (4, "Error finding partition type for the partition %s", partitions[i]);
        }
        paranoid_free(tmp);
        /********
         * It's not swap, mounted, or LVM. See if it's used in a software raid device.
         ********/
        log_msg (5, "It's not swap, mounted, or LVM. See if it's used in a software raid device.");
        mr_asprintf(&command, "mdadm --examine %s 2>/dev/null | awk '{if($1 == \"UUID\"){print $3}}'", partitions[i]);
        log_msg(4, "  Running: %s", command);
        mr_asprintf(&tmp, "%s", call_program_and_get_last_line_of_output(command));
        paranoid_free(command);
        if (!strlen(tmp)) {
            log_msg(4, "  Partition %s is not used in a non-LVM software raid device", partitions[i]);
            paranoid_free(tmp);
            continue;
        }
        log_msg (5, "  UUID: %s", tmp);
        /* Get the Software raid device list */
        mr_asprintf(&command, "%s",
         "cat /proc/mdstat|grep -iv Personal|awk '{if($0~\"^.*[ ]+:\"){printf(\"/dev/%s \", $1)}}END{print \"\"}'");
        log_msg (5, "  Running: %s", command);
        mr_asprintf(&mount_list, "%s", call_program_and_get_last_line_of_output(command));
        paranoid_free(command);
        log_msg(4, "  Software raid device list: %s", mount_list);   
        /* Loop through the software raid device list to see if we can find the partition */
        lastpos = 0;
        while ((token = mr_strtok(mount_list, token_chars, &lastpos)) != NULL) {
            mr_asprintf(&command, "mdadm --detail %s 2>/dev/null | grep -c %s", token, tmp);
            log_msg(4, "  Running: %s", command);
            paranoid_free(tmp);
            mr_asprintf(&tmp, "%s", call_program_and_get_last_line_of_output(command));
            paranoid_free(command);
            if (!atoi(tmp)) {
                log_msg (4,"  Didn't find partition %s in software raid device %s", partitions[i], token);
            } else {
                if ((DSFptr = find_device_in_list(token)) == NULL) {
                    log_msg (4, "Can't find device %s in mounted file systems list", token);
                    paranoid_free(tmp);
                    return (1);
                }
                DSFptr->check = 1;
                break;
            }
        }
        paranoid_free(tmp);
    }
    paranoid_free(partition_list);
    paranoid_free(mount_list);

    /* Determine how much memory to allocate for included_dsf_list and excluded_dsf_list */
    i = 0;
    DSFptr= DSF_Head;
    while (DSFptr != NULL) {
        i += strlen(DSFptr->mount_point) + 1;
        DSFptr = DSFptr->next;
    }
    log_msg (5, "i: %d", i);
    if ((*included_dsf_list = (char *) calloc(i+100, sizeof(char))) == NULL) {
        fatal_error ("Cannot allocate memory");
    }
    if ((*excluded_dsf_list = (char *) calloc(i+100, sizeof(char))) == NULL) {
        fatal_error ("Cannot allocate memory");
    }
    DSFptr= DSF_Head;
    while (DSFptr != NULL) {
        if (DSFptr->check) {
            log_msg (5, "%s is mounted on %s and is on disk %s\n", DSFptr->device, DSFptr->mount_point, dsf);
            strcat(*included_dsf_list, DSFptr->mount_point);
            strcat(*included_dsf_list, " ");
        } else {
            log_msg (4, "%s is mounted on %s and is NOT on disk %s\n", DSFptr->device, DSFptr->mount_point, dsf);
            strcat(*excluded_dsf_list, DSFptr->mount_point);
            strcat(*excluded_dsf_list, " ");
        }
        DSFptr = DSFptr->next;
    }
    log_msg (5, "included_dsf_list: %s", *included_dsf_list);
    log_msg (5, "excluded_dsf_list: %s", *excluded_dsf_list);
    return (0);
}


/**
 * Process mondoarchive's command-line switches.
 * @param bkpinfo The backup information structure to populate.
 * @param flag_val An array of the argument passed to each switch (the letter is the index).
 * If a switch is not set or has no argument, the field in @p flag_val doesn't matter.
 * @param flag_set An array of <tt>bool</tt>s indexed by switch letter: TRUE if it's set,
 * FALSE if it's not.
 * @return The number of problems with the switches, or 0 for success.
 * @bug Maybe include a list of all switches (inc. intentionally undocumented ones not in the manual!) here?
 */
int
process_switches(char flag_val[128][MAX_STR_LEN], bool flag_set[128])
{

    /*@ ints *** */
    int i = 0;
    int retval = 0;
    int percent = 0;
    int lastpos = 0;

    /*@ buffers ** */
    char *tmp = NULL;
    char *tmp1 = NULL;
    char *psz = NULL;
    char *p = NULL;
    char *q = NULL;
    char *token = NULL;
    char *mounted_on_dsf = NULL;
    char *not_mounted_on_dsf = NULL;
    char token_chars[] =" \t\r\f\a\0";

    long itbs = 0L;

    struct stat buf;

    malloc_string(tmp);

    assert(bkpinfo != NULL);
    assert(flag_val != NULL);
    assert(flag_set != NULL);

    bkpinfo->internal_tape_block_size = DEFAULT_INTERNAL_TAPE_BLOCK_SIZE;

    /* compulsory */
    i = flag_set['c'] + flag_set['i'] + flag_set['n'] +
        flag_set['t'] + flag_set['u'] + flag_set['r'] +
        flag_set['w'] + flag_set['C'] + flag_set['U'];
    if ((i == 0) && (! bkpinfo->restore_data)) {
        retval++;
        log_to_screen("You must specify the media type\n");
    }
    if (i > 1) {
        retval++;
        log_to_screen("Please specify only one media type\n");
    }

    if (flag_set['K']) {
        g_loglevel = atoi(flag_val['K']);
            log_msg(1,"Loglevel forced to %d",g_loglevel);
        if (g_loglevel < 3) {
            g_loglevel = 3;
        }
    }

    if ((flag_set['L'] && flag_set['0']) && (! bkpinfo->restore_data)) {
        retval++;
        log_to_screen("You cannot have 'no compression' _and_ LZOP.\n");
    }
    if (! bkpinfo->restore_data) {
        bkpinfo->backup_data = flag_set['O'];
    }
    bkpinfo->verify_data = flag_set['V'];

    if (flag_set['I'] && !bkpinfo->backup_data) {
        log_to_screen("-I switch is ignored if just verifying");
    }
    if (flag_set['E'] && !bkpinfo->backup_data) {
        log_to_screen("-E switch is ignored if just verifying");
    }

    if (!find_home_of_exe("afio")) {
        if (find_home_of_exe("star")) {
            flag_set['R'] = TRUE;
            log_msg(1, "Using star instead of afio");
        } else {
            fatal_error
                ("Neither afio nor star is installed. Please install at least one.");
        }
    }

    if (flag_set['R']) {
        bkpinfo->use_star = TRUE;
        if (flag_set['L']) {
            fatal_error("You may not use star and lzop at the same time.");
        }
        if (!find_home_of_exe("star")) {
            fatal_error
                ("Please install 'star' RPM or tarball if you are going to use -R. Thanks.");
        }
    }

    if ((flag_set['W']) && (! bkpinfo->restore_data)) {
        bkpinfo->nonbootable_backup = TRUE;
        log_to_screen("Warning - you have opted for non-bootable backup");
        if (flag_set['f'] || flag_set['l']) {
            log_to_screen
                ("You don't need to specify bootloader or bootdevice");
        }
    }

    if (flag_set['I']) {
        if (bkpinfo->include_paths[0] == '-') {
            retval++;
            log_to_screen("Please supply a sensible value with '-I'\n");
        }
        if (!strcmp(bkpinfo->include_paths, "/")) {
            log_msg(2, "'/' is pleonastic.");
            bkpinfo->include_paths[0] = '\0';
        }
        if (bkpinfo->include_paths[0]) {
            strcat(bkpinfo->include_paths, " ");
        }
        
        mr_asprintf(&tmp1, "%s", flag_val['I']);
        p = tmp1;
        q = tmp1;

        /* Cut the flag_val['I'] in parts containing all paths to test them */
        while (p != NULL) {
            q = strchr(p, ' ');
            if (q != NULL) {
                *q = '\0';
                if ((stat(p, &buf) != 0) && (! bkpinfo->restore_data)) {
                    log_msg(1, "ERROR ! %s doesn't exist", p);
                    fatal_error("ERROR ! You specified a directory to include which doesn't exist");
                }
                p = q+1 ;
            } else {
                if ((stat(p, &buf) != 0) && (! bkpinfo->restore_data)) {
                    log_msg(1, "ERROR ! %s doesn't exist", p);
                    fatal_error("ERROR ! You specified a directory to include which doesn't exist");
                }
                p = NULL;
            }
        }
        paranoid_free(tmp1);
        while ((token = mr_strtok(flag_val['I'], token_chars, &lastpos)) != NULL) {
            switch (get_dsf_mount_list(token, &mounted_on_dsf, &not_mounted_on_dsf)) {
            /* It's a dsf but not a whole disk dsf */
            case -2:
                log_to_screen("Could %s be a partition instead of a whole disk device special file?\n Ignored.", token);
                break;
            /* Fatal error; exit */
            case 1: 
                fatal_error("Error processing -I option");
            /* Everything is OK; process to archive data */
            case 0:
                log_to_screen("Archiving only the following file systems on %s:\n", token);
                log_to_screen("  %s\n", mounted_on_dsf);
                strcpy(bkpinfo->include_paths, "/");
                if (strlen(not_mounted_on_dsf)) {
                    log_msg (5, "Adding to bkpinfo->exclude_paths due to -I option: %s", not_mounted_on_dsf);
                    log_to_screen("Not archiving the following file systems:\n");
                    log_to_screen("  %s\n", not_mounted_on_dsf);
                    strcat(bkpinfo->exclude_paths, not_mounted_on_dsf);
                    strcat(bkpinfo->exclude_paths, "");
                }
                break;
            /* A device special file was not passed in. Process it as a path. */
            case -1:
                    strcat(bkpinfo->include_paths, token);
                    strcat(bkpinfo->include_paths, " ");
                break; 
            }
        }
        log_msg(1, "include_paths is now '%s'", bkpinfo->include_paths);
        if (bkpinfo->exclude_paths != NULL) {
            log_msg(1, "exclude_paths is now '%s'", bkpinfo->exclude_paths);
        }
        log_msg(4, "Finished with the -I option");
    }

    if (g_kernel_version >= 2.6 && !flag_set['d']
        && (flag_set['c'] || flag_set['w']) && (! bkpinfo->restore_data)) {
        fatal_error
            ("If you are using the 2.6.x kernel, please specify the CD-R(W) device.");
    }


    if (flag_set['J']) {
        if (flag_set['I']) {
            retval++;
            log_to_screen
                ("Please do not use -J in combination with -I. If you want to make a list of files to backup, that's fine, use -J <filename> but please don't muddy the waters by combining -J with -I. Thanks. :-)");
        }
        bkpinfo->make_filelist = FALSE;
        strcpy(bkpinfo->include_paths, flag_val['J']);
    }

    if ((flag_set['c'] || flag_set['w'] || flag_set['C'] || flag_set['r']) && (! bkpinfo->restore_data)) {
        if (!flag_set['r'] && g_kernel_version <= 2.5
            && strstr(flag_val['d'], "/dev/")) {
            fatal_error
                ("Please don't give a /dev entry. Give a SCSI node for the parameter of the -d flag.");
        }
        if (flag_set['r'] && g_kernel_version <= 2.5
            && !strstr(flag_val['d'], "/dev/")) {
            fatal_error
                ("Please give a /dev entry, not a SCSI node, as the parameter of the -d flag.");
        }
        if (g_kernel_version >= 2.6 && !strstr(flag_val['d'], "/dev/")) {
            log_to_screen
                ("Linus says 2.6 has a broken ide-scsi module. Proceed at your own risk...");
        }

        if (system("which cdrecord > /dev/null 2> /dev/null")
            && system("which dvdrecord > /dev/null 2> /dev/null")) {
            fatal_error
                ("Please install dvdrecord/cdrecord and try again.");
        }
        if (flag_set['C']) {
            bkpinfo->cdrw_speed = atoi(flag_val['C']);
            if (bkpinfo->cdrw_speed < 1) {
                fatal_error
                    ("You specified a silly speed for a CD-R[W] drive");
            }
            if (!flag_set['L']) {
                log_to_screen
                    ("You must use -L with -C. Therefore I am setting it for you.");
                flag_set['L'] = 1;
                flag_val['L'][0] = '\0';
            }
        } else {
            log_msg(3, "flag_val['c'] = %s", flag_val['c']);
            log_msg(3, "flag_val['w'] = %s", flag_val['w']);
//    log_msg(3, "flag_set['r'] = %i", flag_set['r'] );
            if (flag_set['c']) {
                bkpinfo->cdrw_speed = atoi(flag_val['c']);
            } else if (flag_set['w']) {
                bkpinfo->cdrw_speed = atoi(flag_val['w']);
            } else if (flag_set['r']) {
                bkpinfo->cdrw_speed = 1;    /*atoi(flag_val['r']); */
            }

            if (bkpinfo->cdrw_speed < 1) {
                fatal_error
                    ("You specified a silly speed for a CD-R[W] drive");
            }
        }
    }

    if ((flag_set['t'] && !flag_set['d']) && (! bkpinfo->restore_data)) {
        log_it("Hmm! No tape drive specified. Let's see what we can do.");
        if (find_tape_device_and_size(flag_val['d'], tmp)) {
            fatal_error
                ("Tape device not specified. I couldn't find it either.");
        }
        flag_set['d'] = TRUE;
        sprintf(tmp,
                "You didn't specify a tape streamer device. I'm assuming %s",
                flag_val['d']);
        log_to_screen(tmp);
        percent = 0;
    }

    if (flag_set['U'])          // USB
    {
        if (! flag_set['d']) {
            fatal_error
                ("You need to specify a device file with -d for bootable USB device usage");
        }
        if ((!flag_set['s']) && (! bkpinfo->restore_data)) {
            fatal_error("You did not specify a size (-s) for your USB device. Aborting");
        }
    }

    if (flag_set['r'])          // DVD
    {
        if (flag_set['m']) {
            fatal_error
                ("Manual CD tray (-m) not yet supported in conjunction w/ DVD drives. Drop -m.");
        }
        if (!flag_set['d']) {
            if (!find_dvd_device(flag_val['d'], FALSE)) {
                flag_set['d'] = TRUE;
                log_to_screen("I guess DVD drive is at %s", flag_val['d']);
            }
        }
        if (strchr(flag_val['d'], ',')) {
            fatal_error
                ("Please don't give a SCSI node. Give a _device_, preferably a /dev entry, for the parameter of the -d flag.");
        }
        if (! bkpinfo->restore_data) {
            if (!find_home_of_exe("growisofs")) {
                fatal_error
                    ("Please install growisofs (probably part of dvd+rw-tools). If you want DVD support, you need it.");
            }
            if (!find_home_of_exe("dvd+rw-format")) {
                fatal_error
                    ("Please install dvd+rw-format (probably part of dvd+rw-tools). If you want DVD support, you need it.");
            }
            if (!flag_set['s']) {
                sprintf(flag_val['s'], "%d", DEFAULT_DVD_DISK_SIZE);    // 4.7 salesman's GB = 4.482 real GB = 4582 MB
                strcat(flag_val['s'], "m");
                log_to_screen
                    ("You did not specify a size (-s) for DVD. I'm guessing %s.",
                    flag_val['s']);
                flag_set['s'] = 1;
            }
        }
/*
      if (flag_set['Z']) {
      bkpinfo->blank_dvd_first = TRUE;
      }
*/
    }

    if (flag_set['t'] || flag_set['u']) {   /* tape size */
        if (strchr(flag_val['d'], ',')) {
            fatal_error
                ("Please don't give a SCSI node. Give a _device_, preferably a /dev entry, for the parameter of the -d flag.");
        }
        if ((flag_set['O']) && (! bkpinfo->restore_data)) {
            if (flag_set['s']) {
                if (flag_set['t']) {
                    fatal_error
                        ("For the moment, please don't specify a tape size. Mondo should handle end-of-tape gracefully anyway.");
                }
                if (process_the_s_switch(flag_val['s'])) {
                    fatal_error("Bad -s switch");
                }
            } else if (flag_set['u'] || flag_set['t']) {
                for (i = 0; i <= MAX_NOOF_MEDIA; i++) {
                    bkpinfo->media_size[i] = 0;
                }
            } else {
                retval++;
                log_to_screen("Tape size not specified.\n");
            }
        }
    } else if (! bkpinfo->restore_data) {           /* CD|USB size */
        if (flag_set['s']) {
            if (process_the_s_switch(flag_val['s'])) {
                fatal_error("Bad -s switch");
            }
        }
        if (flag_set['w']) {
            bkpinfo->wipe_media_first = TRUE;
        }                       /* CD-RW */
    }

    if (flag_set['n']) {
        strncpy(bkpinfo->nfs_mount, flag_val['n'], MAX_STR_LEN);
        if (!flag_set['d']) {
            strncpy(bkpinfo->nfs_remote_dir, "/", MAX_STR_LEN);
        }
        /* test if we specified a user for the NFS dialog */
        p = strchr(bkpinfo->nfs_mount, '@');
        if (p != NULL) {
            /* User found. Store the 2 values */
            p++;
            /* new NFS mount */
            strcpy(tmp,p);
            p--;
            *p = '\0';
            strcpy(bkpinfo->nfs_user,bkpinfo->nfs_mount);
            strcpy(bkpinfo->nfs_mount,tmp);
        }
        sprintf(tmp, "mount | grep -E \"^%s[/]* .*\" | cut -d' ' -f3",
                bkpinfo->nfs_mount);
        strncpy(bkpinfo->isodir,
                call_program_and_get_last_line_of_output(tmp),
                MAX_STR_LEN / 4);
        if (strlen(bkpinfo->isodir) < 3) {
            log_to_screen("NFS share is not mounted. Trying to mount it for you.\n");
            sprintf(tmp, "mount %s", bkpinfo->nfs_mount);
            if (system(tmp)) {
                log_to_screen("Unable to mount NFS share %s. Please mount manually.\n", bkpinfo->nfs_mount);
                retval++;
            } else {
                sprintf(tmp, "mount | grep -E \"^%s[/]* .*\" | cut -d' ' -f3",
                    bkpinfo->nfs_mount);
                strncpy(bkpinfo->isodir,
                        call_program_and_get_last_line_of_output(tmp),
                        MAX_STR_LEN / 4);
                if (strlen(bkpinfo->isodir) < 3) {
                    retval++;
                    log_to_screen("NFS share %s is strangely not mounted. Please mount manually...\n", bkpinfo->nfs_mount);
                }
            }
        }
        log_msg(3, "mount = %s", bkpinfo->nfs_mount);
        log_msg(3, "isodir= %s", bkpinfo->isodir);
    }

    if (flag_set['c']) {
        bkpinfo->backup_media_type = cdr;
    }
    if (flag_set['C']) {
        bkpinfo->backup_media_type = cdstream;
    }
    if (flag_set['i']) {
        bkpinfo->backup_media_type = iso;
    }
    if (flag_set['n']) {
        bkpinfo->backup_media_type = nfs;
        /* Never try to eject a NFS device */
        bkpinfo->please_dont_eject = TRUE;
    }
    if (flag_set['r']) {
        bkpinfo->backup_media_type = dvd;
    }
    if (flag_set['t']) {
        bkpinfo->backup_media_type = tape;
    }
    if (flag_set['u']) {
        bkpinfo->backup_media_type = udev;
    }
    if (flag_set['w']) {
        bkpinfo->backup_media_type = cdrw;
    }
    if (flag_set['U']) {
        bkpinfo->backup_media_type = usb;
        /* Never try to eject a USB device */
        bkpinfo->please_dont_eject = TRUE;
    }
    if (flag_set['z']) {
        if (find_home_of_exe("getfattr")) {
            mr_asprintf(&g_getfattr,"getfattr");
        }
        if (find_home_of_exe("getfacl")) {
            mr_asprintf(&g_getfacl,"getfacl");
        }
    }

    /* optional, popular */
    if (flag_set['g']) {
        g_text_mode = FALSE;
    }

    if (flag_set['E']) {
        if (bkpinfo->exclude_paths[0] == '-') {
            retval++;
            log_to_screen("Please supply a sensible value with '-E'\n");
        }
        if (bkpinfo->exclude_paths[0]) {
            strcat(bkpinfo->exclude_paths, " ");
        }
        mr_asprintf(&tmp1, "%s", flag_val['E']);

        p = tmp1;
        q = tmp1;

        /* Cut the flag_val['E'] in parts containing all paths to test them */
        while (p != NULL) {
            q = strchr(p, ' ');
            if (q != NULL) {
                *q = '\0';
                /* Fix bug 14 where ending / cause a problem later 
                * so handled here for the moment */
                q--;
                if (*q == '/') {
                    *q = '\0';
                }
                q++;
                /* End of bug fix */
                if ((stat(p, &buf) != 0) && (! bkpinfo->restore_data)) {
                    log_msg(1, "WARNING ! %s doesn't exist", p);
                }
                p = q+1 ;
            } else {
                if ((stat(p, &buf) != 0) && (! bkpinfo->restore_data)) {
                    log_msg(1, "WARNING ! %s doesn't exist", p);
                }
                p = NULL;
            }
        }
        paranoid_free(tmp1);
        lastpos = 0;
        while ((token = mr_strtok(flag_val['E'], token_chars, &lastpos)) != NULL) {
            switch (get_dsf_mount_list(token, &mounted_on_dsf, &not_mounted_on_dsf)) {
            case 1: 
                log_msg(1, "WARNING ! a path doesn't exist in -E option");
                break;
            /* Everything is OK; proceed to archive data */
            case 0:
                if (strlen(mounted_on_dsf)) {
                    log_to_screen("Excluding the following file systems on %s:\n", token);
                    log_to_screen("  %s\n", mounted_on_dsf);
                    log_msg (5, "Adding to bkpinfo->exclude_paths due to -E option: %s", mounted_on_dsf);
                    strcat(bkpinfo->exclude_paths, mounted_on_dsf);
                    strcat(bkpinfo->exclude_paths, " ");
                }
                break;
            /* It's a dsf but not a whole disk dsf */
            case -2:
                log_to_screen("Could %s be a partition instead of a whole disk device special file?\nIgnored.", token);
                break;
            /* A device special file was not passed in. Process it as a path. */
            case -1:
                strcat(bkpinfo->exclude_paths, token);
                strcat(bkpinfo->exclude_paths, " ");
                break;
            }
        }
        log_msg(1, "exclude_paths is now '%s'", bkpinfo->exclude_paths);
        log_msg(4, "Finished with the -E option");
    }

    if (flag_set['e']) {
        bkpinfo->please_dont_eject = TRUE;
    }

    if ((flag_set['N']) && (! bkpinfo->restore_data))       // exclude NFS mounts & devices
    {
//      strncpy(psz, list_of_NFS_devices_and_mounts(), MAX_STR_LEN);
        mr_asprintf(&psz, "%s", list_of_NFS_mounts_only());
        if (bkpinfo->exclude_paths[0]) {
            strncat(bkpinfo->exclude_paths, " ", 4*MAX_STR_LEN);
        }
        strncat(bkpinfo->exclude_paths, psz, 4*MAX_STR_LEN);
        mr_free(psz);

        log_msg(3, "-N means we're now excluding %s",
                bkpinfo->exclude_paths);
    }

    if (strlen(bkpinfo->exclude_paths) >= 4*MAX_STR_LEN) {
        fatal_error
            ("Your '-E' parameter is too long. Increase MAX_STR_LEN");
    }

    if (flag_set['b']) {
        mr_asprintf(&psz, flag_val['b']);
        log_msg(1, "psz = '%s'", psz);
        if (psz[strlen(psz) - 1] == 'k') {
            psz[strlen(psz) - 1] = '\0';
            itbs = atol(psz) * 1024L;
        } else {
            itbs = atol(psz);
        }
        mr_free(psz);
        log_msg(1, "'%s' --> %ld", flag_val['b'], itbs);
        log_msg(1, "Internal tape block size is now %ld bytes", itbs);
        if (itbs % 512 != 0 || itbs < 256 || itbs > 1024L * 1024) {
            fatal_error
                ("Are you nuts? Silly, your internal tape block size is. Abort, I shall.");
        }
        bkpinfo->internal_tape_block_size = itbs;
    }

    if ((flag_set['D']) && (! bkpinfo->restore_data)) {
        bkpinfo->differential = 1;
//      bkpinfo->differential = atoi (flag_val['D']);
        if ((bkpinfo->differential < 1) || (bkpinfo->differential > 9)) {
            fatal_error
                ("The D option should be between 1 and 9 inclusive");
        }
    }

    if (flag_set['x']) {
        strncpy(bkpinfo->image_devs, flag_val['x'], MAX_STR_LEN / 4);
        if ((run_program_and_log_output("which ntfsclone", 2)) && (! bkpinfo->restore_data)) {
            fatal_error("Please install ntfsprogs package/tarball.");
        }
    }

    if (flag_set['m']) {
        bkpinfo->manual_cd_tray = TRUE;
    }

    if ((flag_set['k']) && (! bkpinfo->restore_data)) {
        strncpy(bkpinfo->kernel_path, flag_val['k'], MAX_STR_LEN);
        if (!strcmp(bkpinfo->kernel_path, "failsafe")) {
            strcpy(bkpinfo->kernel_path, "FAILSAFE");
        }
        if (strcmp(bkpinfo->kernel_path, "FAILSAFE")
            && !does_file_exist(bkpinfo->kernel_path)) {
            retval++;
            sprintf(tmp,
                    "You specified kernel '%s', which does not exist\n",
                    bkpinfo->kernel_path);
            log_to_screen(tmp);
        }
    }

    if (flag_set['p']) {
        strncpy(bkpinfo->prefix, flag_val['p'], MAX_STR_LEN / 4);
        log_msg(1,"Prefix forced to %s",bkpinfo->prefix);
    }

    if (flag_set['d']) {        /* backup directory (if ISO/NFS) */
        if (flag_set['i']) {
            strncpy(bkpinfo->isodir, flag_val['d'], MAX_STR_LEN / 4);
            sprintf(tmp, "ls -l %s", bkpinfo->isodir);
            if (run_program_and_log_output(tmp, 2)) {
                fatal_error
                    ("output folder does not exist - please create it");
            }
        } else if (flag_set['n']) {
            strncpy(bkpinfo->nfs_remote_dir, flag_val['d'], MAX_STR_LEN);
        } else {                /* backup device (if tape/CD-R/CD-RW) */
            strncpy(bkpinfo->media_device, flag_val['d'], MAX_STR_LEN / 4);
        }
    }

    if ((flag_set['n']) && (! bkpinfo->restore_data)) {
        mr_asprintf(&tmp1,"%s/%s/.dummy.txt", bkpinfo->isodir,bkpinfo->nfs_remote_dir);
        if (bkpinfo->nfs_user) {
            sprintf(tmp, "sudo -u %s echo hi > %s", bkpinfo->nfs_user, tmp1);
        } else {
            sprintf(tmp, "echo hi > %s", tmp1);
        }
        if (run_program_and_log_output(tmp, 2)) {
            retval++;
            sprintf(tmp,
                    "Are you sure directory '%s' exists in remote dir '%s'?\nIf so, do you have rights to write to it?\n",
                    bkpinfo->nfs_remote_dir, bkpinfo->nfs_mount);
            log_to_screen(tmp);
        }
        unlink(tmp1);
        paranoid_free(tmp1);
    }

    if (!flag_set['d']
        && (flag_set['c'] || flag_set['w'] || flag_set['C'])) {
        if (g_kernel_version >= 2.6) {
            if (popup_and_get_string
                ("Device", "Please specify the device",
                 bkpinfo->media_device, MAX_STR_LEN / 4)) {
                retval++;
                log_to_screen("User opted to cancel.");
            }
        } else if (find_cdrw_device(bkpinfo->media_device)) {
            retval++;
            log_to_screen
                ("Tried and failed to find CD-R[W] drive automatically.\n");
        } else {
            flag_set['d'] = TRUE;
            strncpy(flag_val['d'], bkpinfo->media_device, MAX_STR_LEN / 4);
        }
    }

    if ((!flag_set['d'] && !flag_set['n'] && !flag_set['C']) && (! bkpinfo->restore_data)) {
        retval++;
        log_to_screen("Please specify the backup device/directory.\n");
        fatal_error
            ("You didn't use -d to specify the backup device/directory.");
    }

    for (i = '0'; i <= '9'; i++) {
        if (flag_set[i]) {
            bkpinfo->compression_level = i - '0';
        }                       /* not '\0' but '0' */
    }

    if (flag_set['S']) {
        sprintf(bkpinfo->scratchdir, "%s/mondo.scratch.%ld", flag_val['S'],
                random() % 32768);
    }

    if (flag_set['T']) {
        setup_tmpdir(flag_val['T']);
        sprintf(tmp, "touch %s/.foo.dat", bkpinfo->tmpdir);
        if (run_program_and_log_output(tmp, 1)) {
            retval++;
            log_to_screen
                ("Please specify a tempdir which I can write to. :)");
            fatal_error("I cannot write to the tempdir you specified.");
        }
        sprintf(tmp, "ln -sf %s/.foo.dat %s/.bar.dat", bkpinfo->tmpdir, bkpinfo->tmpdir);
        if (run_program_and_log_output(tmp, 1)) {
            retval++;
            log_to_screen
                ("Please don't specify a SAMBA or VFAT or NFS tmpdir.");
            fatal_error("I cannot write to the tempdir you specified.");
        }
    }

    if ((flag_set['A']) && (! bkpinfo->restore_data)) {
        strncpy(bkpinfo->call_after_iso, flag_val['A'], MAX_STR_LEN);
    }

    if ((flag_set['B']) && (! bkpinfo->restore_data)) {
        strncpy(bkpinfo->call_before_iso, flag_val['B'], MAX_STR_LEN);
    }

    if ((flag_set['H']) && (! bkpinfo->restore_data)) {
        g_cd_recovery = TRUE;
    }

    if ((flag_set['l']) && (! bkpinfo->restore_data)) {
#ifdef __FreeBSD__
#  define BOOT_LOADER_CHARS "GLBMR"
#else
#  ifdef __IA64__
#    define BOOT_LOADER_CHARS "GER"
#  else
#    define BOOT_LOADER_CHARS "GLR"
#  endif
#endif
        if (!strchr
            (BOOT_LOADER_CHARS,
             (bkpinfo->boot_loader = flag_val['l'][0]))) {
            log_msg(1, "%c? WTF is %c? I need G, L, E or R.",
                    bkpinfo->boot_loader, bkpinfo->boot_loader);
            fatal_error
                ("Please specify GRUB, LILO, ELILO  or RAW with the -l switch");
        }
#undef BOOT_LOADER_CHARS
    }

    if (flag_set['f']) {
        strncpy(bkpinfo->boot_device,
                resolve_softlinks_to_get_to_actual_device_file(flag_val
                                                               ['f']),
                MAX_STR_LEN / 4);
    }

    if ((flag_set['P']) && (! bkpinfo->restore_data)) {
        strncpy(bkpinfo->postnuke_tarball, flag_val['P'], MAX_STR_LEN);
    }

    if (flag_set['Q']) {
        i = which_boot_loader(tmp);
        log_msg(3, "boot loader is %c, residing at %s", i, tmp);
        printf("boot loader is %c, residing at %s\n", i, tmp);
        finish(0);
    }

    if ((flag_set['L']) && (! bkpinfo->restore_data)) {
        bkpinfo->use_lzo = TRUE;
        if (run_program_and_log_output("which lzop", 2)) {
            retval++;
            log_to_screen
                ("Please install LZOP. You can't use '-L' until you do.\n");
        }
    }

    if ((flag_set['G']) && (! bkpinfo->restore_data)) {
        bkpinfo->use_gzip = TRUE;
        if (run_program_and_log_output("which gzip", 2)) {
            retval++;
            log_to_screen
                ("Please install gzip. You can't use '-G' until you do.\n");
        }
    }

    bkpinfo->use_obdr = FALSE;
    if (flag_set['o']) {
        if ((!flag_set['t']) && (! bkpinfo->restore_data)) {
            log_to_screen("OBDR support is only available for tapes. Use the -t option");
            fatal_error("Aborting");
        }
        bkpinfo->use_obdr = TRUE;
    }

#ifndef __FreeBSD__
    if ((!is_this_a_valid_disk_format("vfat")) && (! bkpinfo->restore_data)) {
        bkpinfo->make_cd_use_lilo = TRUE;
        log_to_screen
            ("Your kernel appears not to support vfat filesystems. I am therefore");
        log_to_screen
            ("using LILO instead of SYSLINUX as the media boot loader.");
    }
    if ((run_program_and_log_output("which mkfs.vfat", 2)) && (! bkpinfo->restore_data)) {
        bkpinfo->make_cd_use_lilo = TRUE;
#ifdef __IA32__
        log_to_screen
            ("Your filesystem is missing 'mkfs.vfat', so I cannot use SYSLINUX as");
        log_to_screen
            ("your boot loader. I shall therefore use LILO instead.");
#endif
#ifdef __IA64__
        log_to_screen
            ("Your filesystem is missing 'mkfs.vfat', so I cannot prepare the EFI");
        log_to_screen("environment correctly. Please install it.");
        fatal_error("Aborting");
#endif
    }
#ifdef __IA64__
    /* We force ELILO usage on IA64 */
    bkpinfo->make_cd_use_lilo = TRUE;
#endif
#endif

    if (! bkpinfo->restore_data) {
        i = flag_set['O'] + flag_set['V'];
        if (i == 0) {
            retval++;
            log_to_screen("Specify backup (-O), verify (-V) or both (-OV).\n");
        }
    }

    if ((! bkpinfo->restore_data) && (flag_set['Z'])) {
            fatal_error
                ("The -Z switch is only valid in restore mode");
    }

    if (flag_set['Z']) {
        if (! strcmp(flag_val['Z'], "nuke")) {
            bkpinfo->restore_mode = nuke;
        } else if (! strcmp(flag_val['Z'], "interactive")) {
            bkpinfo->restore_mode = interactive;
        } else if (! strcmp(flag_val['Z'], "compare")) {
            bkpinfo->restore_mode = compare;
        } else if (! strcmp(flag_val['Z'], "mbr")) {
            bkpinfo->restore_mode = mbr;
        } else if (! strcmp(flag_val['Z'], "iso")) {
            bkpinfo->restore_mode = isoonly;
        } else if (! strcmp(flag_val['Z'], "isonuke")) {
            bkpinfo->restore_mode = isonuke;
        } else {
            bkpinfo->restore_mode = interactive;
        }
    }

/* and finally... */

    paranoid_free(tmp);
    return (retval);
}



/**
 * Get the switches from @p argc and @p argv using getopt() and place them in
 * @p flag_set and @p flag_val.
 * @param argc The argument count (@p argc passed to main()).
 * @param argv The argument vector (@p argv passed to main()).
 * @param flag_val An array indexed by switch letter - if a switch is set and
 * has an argument then set flag_val[switch] to that argument.
 * @param flag_set An array indexed by switch letter - if a switch is set then
 * set flag_set[switch] to TRUE, else set it to FALSE.
 * @return The number of problems with the command line (0 for success).
 */
int
retrieve_switches_from_command_line(int argc, char *argv[],
                                    char flag_val[128][MAX_STR_LEN],
                                    bool flag_set[128])
{
    /*@ ints ** */
    int opt = 0;
    char *tmp = NULL;
    int i = 0;
    int len;

    /*@ bools *** */
    bool bad_switches = FALSE;

    assert(flag_val != NULL);
    assert(flag_set != NULL);

    for (i = 0; i < 128; i++) {
        flag_val[i][0] = '\0';
        flag_set[i] = FALSE;
    }
    while ((opt =
            getopt(argc, argv, MONDO_OPTIONS))
           != -1) {
        if (opt == '?') {
            bad_switches = TRUE;
            /*log_it("Invalid option: %c\n",optopt); */
        } else {
            if (flag_set[optopt]) {
                bad_switches = TRUE;
                mr_asprintf(&tmp, "Switch -%c previously defined as %s\n", opt,
                        flag_val[i]);
                log_to_screen(tmp);
                paranoid_free(tmp);
            } else {
                flag_set[opt] = TRUE;
                if (optarg) {
                    len = strlen(optarg);
                    if (optarg[0] != '/' && optarg[len - 1] == '/') {
                        optarg[--len] = '\0';
                        log_to_screen
                            ("Warning - param '%s' should not have trailing slash!",
                             optarg);
                    }
                    if (opt == 'd') {
                        if (strchr(flag_val[opt], '/')
                            && flag_val[opt][0] != '/') {
                            mr_asprintf(&tmp,
                                    "-%c flag --- must be absolute path --- '%s' isn't absolute",
                                    opt, flag_val[opt]);
                            log_to_screen(tmp);
                            paranoid_free(tmp);
                            bad_switches = TRUE;
                        }
                    }
                    strcpy(flag_val[opt], optarg);
                }
            }
        }
    }
    for (i = optind; i < argc; i++) {
        bad_switches = TRUE;
        mr_asprintf(&tmp, "Invalid arg -- %s\n", argv[i]);
        log_to_screen(tmp);
        paranoid_free(tmp);
    }
    return (bad_switches);
}




/**
 * Print a not-so-helpful help message and exit.
 */
void help_screen()
{
    log_msg(1, "Type 'man mondoarchive' for more information\n");
    exit(1);
}


/**
 * Terminate Mondo in response to a signal.
 * @param sig The signal number received.
 */
void terminate_daemon(int sig)
{
    char *tmp = NULL;
    char *tmp2 = NULL;

    switch (sig) {
    case SIGINT:
        mr_asprintf(&tmp, "SIGINT");
        mr_asprintf(&tmp2, "You interrupted me :-)");
        break;
    case SIGKILL:
        mr_asprintf(&tmp, "SIGKILL");
        mr_asprintf(&tmp2,
               "I seriously have no clue how this signal even got to me. Something's wrong with your system.");
        break;
    case SIGTERM:
        mr_asprintf(&tmp, "SIGTERM");
        mr_asprintf(&tmp2, "Got terminate signal");
        break;
    case SIGHUP:
        mr_asprintf(&tmp, "SIGHUP");
        mr_asprintf(&tmp2, "Hangup on line");
        break;
    case SIGSEGV:
        mr_asprintf(&tmp, "SIGSEGV");
        mr_asprintf(&tmp2,
               "Internal programming error. Please send a backtrace as well as your log.");
        break;
    case SIGPIPE:
        mr_asprintf(&tmp, "SIGPIPE");
        mr_asprintf(&tmp2, "Pipe was broken");
        break;
    case SIGABRT:
        mr_asprintf(&tmp, "SIGABRT");
        mr_asprintf(&tmp2,
                "Abort - probably failed assertion. I'm sleeping for a few seconds so you can read the message.");
        break;
    default:
        mr_asprintf(&tmp, "(Unknown)");
        mr_asprintf(&tmp2, "(Unknown)");
    }

    mr_strcat(tmp, " signal received from OS");
    log_to_screen(tmp);
    paranoid_free(tmp);

    log_to_screen(tmp2);
    paranoid_free(tmp2);
    if (sig == SIGABRT) {
        sleep(10);
    }
    kill_buffer();

    free_MR_global_filenames();

    fatal_error
        ("MondoRescue is terminating in response to a signal from the OS");
    finish(254);                // just in case
}




/**
 * Turn signal-trapping on or off.
 * @param on If TRUE, turn it on; if FALSE, turn it off (we still trap it, just don't do as much).
 */
void set_signals(int on)
{
    int signals[] =
        { SIGTERM, SIGHUP, SIGTRAP, SIGABRT, SIGINT, SIGKILL, SIGSTOP, 0 };
    int i;

    signal(SIGPIPE, sigpipe_occurred);
    for (i = 0; signals[i]; i++) {
        if (on) {
            signal(signals[i], terminate_daemon);
        } else {
            signal(signals[i], termination_in_progress);
        }
    }
}




/**
 * Exit immediately without cleaning up.
 * @param sig The signal we are exiting due to.
 */
void termination_in_progress(int sig)
{
    log_msg(1, "Termination in progress");
    usleep(1000);
    pthread_exit(0);
}

/* @} - end of cliGroup */