[1765] | 1 | /*
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| 2 | setfiles: based on policycoreutils 2.0.19
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| 3 | policycoreutils was released under GPL 2.
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| 4 | Port to BusyBox (c) 2007 by Yuichi Nakamura <ynakam@hitachisoft.jp>
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| 5 | */
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| 6 |
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[3232] | 7 | //usage:#define setfiles_trivial_usage
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| 8 | //usage: "[-dnpqsvW] [-e DIR]... [-o FILE] [-r alt_root_path]"
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| 9 | //usage: IF_FEATURE_SETFILES_CHECK_OPTION(
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| 10 | //usage: " [-c policyfile] spec_file"
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| 11 | //usage: )
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| 12 | //usage: " pathname"
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| 13 | //usage:#define setfiles_full_usage "\n\n"
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| 14 | //usage: "Reset file contexts under pathname according to spec_file\n"
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| 15 | //usage: IF_FEATURE_SETFILES_CHECK_OPTION(
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| 16 | //usage: "\n -c FILE Check the validity of the contexts against the specified binary policy"
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| 17 | //usage: )
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| 18 | //usage: "\n -d Show which specification matched each file"
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| 19 | //usage: "\n -l Log changes in file labels to syslog"
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[3621] | 20 | //TODO: log to syslog is not yet implemented, it goes to stdout only now
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[3232] | 21 | //usage: "\n -n Don't change any file labels"
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| 22 | //usage: "\n -q Suppress warnings"
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| 23 | //usage: "\n -r DIR Use an alternate root path"
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| 24 | //usage: "\n -e DIR Exclude DIR"
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| 25 | //usage: "\n -F Force reset of context to match file_context for customizable files"
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| 26 | //usage: "\n -o FILE Save list of files with incorrect context"
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| 27 | //usage: "\n -s Take a list of files from stdin (instead of command line)"
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| 28 | //usage: "\n -v Show changes in file labels, if type or role are changing"
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| 29 | //usage: "\n -vv Show changes in file labels, if type, role, or user are changing"
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| 30 | //usage: "\n -W Display warnings about entries that had no matching files"
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| 31 | //usage:
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| 32 | //usage:#define restorecon_trivial_usage
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| 33 | //usage: "[-iFnRv] [-e EXCLUDEDIR]... [-o FILE] [-f FILE]"
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| 34 | //usage:#define restorecon_full_usage "\n\n"
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| 35 | //usage: "Reset security contexts of files in pathname\n"
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| 36 | //usage: "\n -i Ignore files that don't exist"
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| 37 | //usage: "\n -f FILE File with list of files to process"
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| 38 | //usage: "\n -e DIR Directory to exclude"
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| 39 | //usage: "\n -R,-r Recurse"
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| 40 | //usage: "\n -n Don't change any file labels"
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| 41 | //usage: "\n -o FILE Save list of files with incorrect context"
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| 42 | //usage: "\n -v Verbose"
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| 43 | //usage: "\n -vv Show changed labels"
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| 44 | //usage: "\n -F Force reset of context to match file_context"
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| 45 | //usage: "\n for customizable files, or the user section,"
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| 46 | //usage: "\n if it has changed"
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| 47 |
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[1765] | 48 | #include "libbb.h"
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| 49 | #if ENABLE_FEATURE_SETFILES_CHECK_OPTION
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| 50 | #include <sepol/sepol.h>
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| 51 | #endif
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| 52 |
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| 53 | #define MAX_EXCLUDES 50
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| 54 |
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| 55 | struct edir {
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| 56 | char *directory;
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| 57 | size_t size;
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| 58 | };
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| 59 |
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| 60 | struct globals {
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| 61 | FILE *outfile;
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| 62 | char *policyfile;
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| 63 | char *rootpath;
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| 64 | int rootpathlen;
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| 65 | unsigned count;
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| 66 | int excludeCtr;
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| 67 | int errors;
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| 68 | int verbose; /* getopt32 uses it, has to be int */
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| 69 | smallint recurse; /* Recursive descent */
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| 70 | smallint follow_mounts;
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| 71 | /* Behavior flags determined based on setfiles vs. restorecon */
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| 72 | smallint expand_realpath; /* Expand paths via realpath */
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| 73 | smallint abort_on_error; /* Abort the file tree walk upon an error */
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| 74 | int add_assoc; /* Track inode associations for conflict detection */
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| 75 | int matchpathcon_flags; /* Flags to matchpathcon */
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| 76 | dev_t dev_id; /* Device id where target file exists */
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| 77 | int nerr;
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| 78 | struct edir excludeArray[MAX_EXCLUDES];
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[2725] | 79 | } FIX_ALIASING;
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[3621] | 80 | #define G (*(struct globals*)bb_common_bufsiz1)
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[1765] | 81 | void BUG_setfiles_globals_too_big(void);
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| 82 | #define INIT_G() do { \
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[3621] | 83 | setup_common_bufsiz(); \
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[1765] | 84 | if (sizeof(G) > COMMON_BUFSIZE) \
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| 85 | BUG_setfiles_globals_too_big(); \
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| 86 | /* memset(&G, 0, sizeof(G)); - already is */ \
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| 87 | } while (0)
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| 88 | #define outfile (G.outfile )
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| 89 | #define policyfile (G.policyfile )
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| 90 | #define rootpath (G.rootpath )
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| 91 | #define rootpathlen (G.rootpathlen )
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| 92 | #define count (G.count )
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| 93 | #define excludeCtr (G.excludeCtr )
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| 94 | #define errors (G.errors )
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| 95 | #define verbose (G.verbose )
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| 96 | #define recurse (G.recurse )
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| 97 | #define follow_mounts (G.follow_mounts )
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| 98 | #define expand_realpath (G.expand_realpath )
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| 99 | #define abort_on_error (G.abort_on_error )
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| 100 | #define add_assoc (G.add_assoc )
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| 101 | #define matchpathcon_flags (G.matchpathcon_flags)
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| 102 | #define dev_id (G.dev_id )
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| 103 | #define nerr (G.nerr )
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| 104 | #define excludeArray (G.excludeArray )
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| 105 |
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| 106 | /* Must match getopt32 string! */
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| 107 | enum {
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| 108 | OPT_d = (1 << 0),
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| 109 | OPT_e = (1 << 1),
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| 110 | OPT_f = (1 << 2),
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| 111 | OPT_i = (1 << 3),
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| 112 | OPT_l = (1 << 4),
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| 113 | OPT_n = (1 << 5),
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| 114 | OPT_p = (1 << 6),
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| 115 | OPT_q = (1 << 7),
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| 116 | OPT_r = (1 << 8),
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| 117 | OPT_s = (1 << 9),
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| 118 | OPT_v = (1 << 10),
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| 119 | OPT_o = (1 << 11),
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| 120 | OPT_F = (1 << 12),
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| 121 | OPT_W = (1 << 13),
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| 122 | OPT_c = (1 << 14), /* c only for setfiles */
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| 123 | OPT_R = (1 << 14), /* R only for restorecon */
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| 124 | };
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| 125 | #define FLAG_d_debug (option_mask32 & OPT_d)
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| 126 | #define FLAG_e (option_mask32 & OPT_e)
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| 127 | #define FLAG_f (option_mask32 & OPT_f)
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| 128 | #define FLAG_i_ignore_enoent (option_mask32 & OPT_i)
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| 129 | #define FLAG_l_take_log (option_mask32 & OPT_l)
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| 130 | #define FLAG_n_dry_run (option_mask32 & OPT_n)
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| 131 | #define FLAG_p_progress (option_mask32 & OPT_p)
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| 132 | #define FLAG_q_quiet (option_mask32 & OPT_q)
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| 133 | #define FLAG_r (option_mask32 & OPT_r)
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| 134 | #define FLAG_s (option_mask32 & OPT_s)
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| 135 | #define FLAG_v (option_mask32 & OPT_v)
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| 136 | #define FLAG_o (option_mask32 & OPT_o)
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| 137 | #define FLAG_F_force (option_mask32 & OPT_F)
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| 138 | #define FLAG_W_warn_no_match (option_mask32 & OPT_W)
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| 139 | #define FLAG_c (option_mask32 & OPT_c)
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| 140 | #define FLAG_R (option_mask32 & OPT_R)
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| 141 |
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| 142 |
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[2725] | 143 | static void qprintf(const char *fmt UNUSED_PARAM, ...)
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[1765] | 144 | {
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| 145 | /* quiet, do nothing */
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| 146 | }
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| 147 |
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| 148 | static void inc_err(void)
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| 149 | {
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| 150 | nerr++;
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| 151 | if (nerr > 9 && !FLAG_d_debug) {
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| 152 | bb_error_msg_and_die("exiting after 10 errors");
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| 153 | }
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| 154 | }
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| 155 |
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[2725] | 156 | static void add_exclude(const char *directory)
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[1765] | 157 | {
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| 158 | struct stat sb;
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| 159 | size_t len;
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| 160 |
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| 161 | if (directory == NULL || directory[0] != '/') {
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| 162 | bb_error_msg_and_die("full path required for exclude: %s", directory);
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| 163 | }
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| 164 | if (lstat(directory, &sb)) {
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| 165 | bb_error_msg("directory \"%s\" not found, ignoring", directory);
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| 166 | return;
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| 167 | }
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| 168 | if ((sb.st_mode & S_IFDIR) == 0) {
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| 169 | bb_error_msg("\"%s\" is not a directory: mode %o, ignoring",
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| 170 | directory, sb.st_mode);
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| 171 | return;
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| 172 | }
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| 173 | if (excludeCtr == MAX_EXCLUDES) {
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| 174 | bb_error_msg_and_die("maximum excludes %d exceeded", MAX_EXCLUDES);
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| 175 | }
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| 176 |
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| 177 | len = strlen(directory);
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| 178 | while (len > 1 && directory[len - 1] == '/') {
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| 179 | len--;
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| 180 | }
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| 181 | excludeArray[excludeCtr].directory = xstrndup(directory, len);
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| 182 | excludeArray[excludeCtr++].size = len;
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| 183 | }
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| 184 |
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| 185 | static bool exclude(const char *file)
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| 186 | {
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| 187 | int i = 0;
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| 188 | for (i = 0; i < excludeCtr; i++) {
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| 189 | if (strncmp(file, excludeArray[i].directory,
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| 190 | excludeArray[i].size) == 0) {
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| 191 | if (file[excludeArray[i].size] == '\0'
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| 192 | || file[excludeArray[i].size] == '/') {
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| 193 | return 1;
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| 194 | }
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| 195 | }
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| 196 | }
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| 197 | return 0;
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| 198 | }
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| 199 |
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| 200 | static int match(const char *name, struct stat *sb, char **con)
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| 201 | {
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| 202 | int ret;
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| 203 | char path[PATH_MAX + 1];
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| 204 | char *tmp_path = xstrdup(name);
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| 205 |
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| 206 | if (excludeCtr > 0 && exclude(name)) {
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| 207 | goto err;
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| 208 | }
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| 209 | ret = lstat(name, sb);
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| 210 | if (ret) {
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| 211 | if (FLAG_i_ignore_enoent && errno == ENOENT) {
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| 212 | free(tmp_path);
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| 213 | return 0;
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| 214 | }
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| 215 | bb_error_msg("stat(%s)", name);
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| 216 | goto err;
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| 217 | }
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| 218 |
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| 219 | if (expand_realpath) {
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| 220 | if (S_ISLNK(sb->st_mode)) {
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| 221 | char *p = NULL;
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| 222 | char *file_sep;
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| 223 |
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| 224 | size_t len = 0;
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| 225 |
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| 226 | if (verbose > 1)
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| 227 | bb_error_msg("warning! %s refers to a symbolic link, not following last component", name);
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| 228 |
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| 229 | file_sep = strrchr(tmp_path, '/');
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| 230 | if (file_sep == tmp_path) {
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| 231 | file_sep++;
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| 232 | path[0] = '\0';
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| 233 | p = path;
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| 234 | } else if (file_sep) {
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| 235 | *file_sep++ = '\0';
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| 236 | p = realpath(tmp_path, path);
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| 237 | } else {
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| 238 | file_sep = tmp_path;
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| 239 | p = realpath("./", path);
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| 240 | }
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| 241 | if (p)
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| 242 | len = strlen(p);
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| 243 | if (!p || len + strlen(file_sep) + 2 > PATH_MAX) {
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| 244 | bb_perror_msg("realpath(%s) failed", name);
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| 245 | goto err;
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| 246 | }
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| 247 | p += len;
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| 248 | /* ensure trailing slash of directory name */
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| 249 | if (len == 0 || p[-1] != '/') {
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| 250 | *p++ = '/';
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| 251 | }
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| 252 | strcpy(p, file_sep);
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| 253 | name = path;
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| 254 | if (excludeCtr > 0 && exclude(name))
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| 255 | goto err;
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| 256 | } else {
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| 257 | char *p;
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| 258 | p = realpath(name, path);
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| 259 | if (!p) {
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| 260 | bb_perror_msg("realpath(%s)", name);
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| 261 | goto err;
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| 262 | }
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| 263 | name = p;
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| 264 | if (excludeCtr > 0 && exclude(name))
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| 265 | goto err;
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| 266 | }
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| 267 | }
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| 268 |
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| 269 | /* name will be what is matched in the policy */
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| 270 | if (NULL != rootpath) {
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| 271 | if (0 != strncmp(rootpath, name, rootpathlen)) {
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| 272 | bb_error_msg("%s is not located in %s",
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| 273 | name, rootpath);
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| 274 | goto err;
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| 275 | }
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| 276 | name += rootpathlen;
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| 277 | }
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| 278 |
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| 279 | free(tmp_path);
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| 280 | if (rootpath != NULL && name[0] == '\0')
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| 281 | /* this is actually the root dir of the alt root */
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| 282 | return matchpathcon_index("/", sb->st_mode, con);
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| 283 | return matchpathcon_index(name, sb->st_mode, con);
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| 284 | err:
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| 285 | free(tmp_path);
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| 286 | return -1;
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| 287 | }
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| 288 |
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| 289 | /* Compare two contexts to see if their differences are "significant",
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| 290 | * or whether the only difference is in the user. */
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| 291 | static bool only_changed_user(const char *a, const char *b)
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| 292 | {
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| 293 | if (FLAG_F_force)
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| 294 | return 0;
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| 295 | if (!a || !b)
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| 296 | return 0;
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| 297 | a = strchr(a, ':'); /* Rest of the context after the user */
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| 298 | b = strchr(b, ':');
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| 299 | if (!a || !b)
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| 300 | return 0;
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| 301 | return (strcmp(a, b) == 0);
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| 302 | }
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| 303 |
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| 304 | static int restore(const char *file)
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| 305 | {
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| 306 | char *my_file;
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| 307 | struct stat my_sb;
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| 308 | int i, j, ret;
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| 309 | char *context = NULL;
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| 310 | char *newcon = NULL;
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| 311 | bool user_only_changed = 0;
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| 312 | int retval = 0;
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| 313 |
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| 314 | my_file = bb_simplify_path(file);
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| 315 |
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| 316 | i = match(my_file, &my_sb, &newcon);
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| 317 |
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| 318 | if (i < 0) /* No matching specification. */
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| 319 | goto out;
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| 320 |
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| 321 | if (FLAG_p_progress) {
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| 322 | count++;
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| 323 | if (count % 0x400 == 0) { /* every 1024 times */
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| 324 | count = (count % (80*0x400));
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| 325 | if (count == 0)
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[2725] | 326 | bb_putchar('\n');
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| 327 | bb_putchar('*');
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| 328 | fflush_all();
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[1765] | 329 | }
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| 330 | }
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| 331 |
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| 332 | /*
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| 333 | * Try to add an association between this inode and
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| 334 | * this specification. If there is already an association
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| 335 | * for this inode and it conflicts with this specification,
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| 336 | * then use the last matching specification.
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| 337 | */
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| 338 | if (add_assoc) {
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| 339 | j = matchpathcon_filespec_add(my_sb.st_ino, i, my_file);
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| 340 | if (j < 0)
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| 341 | goto err;
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| 342 |
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| 343 | if (j != i) {
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| 344 | /* There was already an association and it took precedence. */
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| 345 | goto out;
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| 346 | }
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| 347 | }
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| 348 |
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| 349 | if (FLAG_d_debug)
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| 350 | printf("%s: %s matched by %s\n", applet_name, my_file, newcon);
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| 351 |
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| 352 | /* Get the current context of the file. */
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| 353 | ret = lgetfilecon_raw(my_file, &context);
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| 354 | if (ret < 0) {
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| 355 | if (errno == ENODATA) {
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| 356 | context = NULL; /* paranoia */
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| 357 | } else {
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| 358 | bb_perror_msg("lgetfilecon_raw on %s", my_file);
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| 359 | goto err;
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| 360 | }
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| 361 | user_only_changed = 0;
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| 362 | } else
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| 363 | user_only_changed = only_changed_user(context, newcon);
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| 364 |
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| 365 | /*
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| 366 | * Do not relabel the file if the matching specification is
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| 367 | * <<none>> or the file is already labeled according to the
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| 368 | * specification.
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| 369 | */
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| 370 | if ((strcmp(newcon, "<<none>>") == 0)
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| 371 | || (context && (strcmp(context, newcon) == 0) && !FLAG_F_force)) {
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| 372 | goto out;
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| 373 | }
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| 374 |
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| 375 | if (!FLAG_F_force && context && (is_context_customizable(context) > 0)) {
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| 376 | if (verbose > 1) {
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| 377 | bb_error_msg("skipping %s. %s is customizable_types",
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| 378 | my_file, context);
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| 379 | }
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| 380 | goto out;
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| 381 | }
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| 382 |
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| 383 | if (verbose) {
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| 384 | /* If we're just doing "-v", trim out any relabels where
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| 385 | * the user has changed but the role and type are the
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| 386 | * same. For "-vv", emit everything. */
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| 387 | if (verbose > 1 || !user_only_changed) {
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[3621] | 388 | printf("%s: reset %s context %s->%s\n",
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[2725] | 389 | applet_name, my_file, context ? context : "", newcon);
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[1765] | 390 | }
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| 391 | }
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| 392 |
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| 393 | if (FLAG_l_take_log && !user_only_changed) {
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| 394 | if (context)
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[3621] | 395 | printf("relabeling %s from %s to %s\n", my_file, context, newcon);
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[1765] | 396 | else
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[3621] | 397 | printf("labeling %s to %s\n", my_file, newcon);
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[1765] | 398 | }
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| 399 |
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| 400 | if (outfile && !user_only_changed)
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| 401 | fprintf(outfile, "%s\n", my_file);
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| 402 |
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| 403 | /*
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| 404 | * Do not relabel the file if -n was used.
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| 405 | */
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| 406 | if (FLAG_n_dry_run || user_only_changed)
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| 407 | goto out;
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| 408 |
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| 409 | /*
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| 410 | * Relabel the file to the specified context.
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| 411 | */
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| 412 | ret = lsetfilecon(my_file, newcon);
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| 413 | if (ret) {
|
---|
| 414 | bb_perror_msg("lsetfileconon(%s,%s)", my_file, newcon);
|
---|
| 415 | goto err;
|
---|
| 416 | }
|
---|
| 417 |
|
---|
| 418 | out:
|
---|
| 419 | freecon(context);
|
---|
| 420 | freecon(newcon);
|
---|
| 421 | free(my_file);
|
---|
| 422 | return retval;
|
---|
| 423 | err:
|
---|
| 424 | retval--; /* -1 */
|
---|
| 425 | goto out;
|
---|
| 426 | }
|
---|
| 427 |
|
---|
| 428 | /*
|
---|
| 429 | * Apply the last matching specification to a file.
|
---|
| 430 | * This function is called by recursive_action on each file during
|
---|
| 431 | * the directory traversal.
|
---|
| 432 | */
|
---|
[2725] | 433 | static int FAST_FUNC apply_spec(
|
---|
| 434 | const char *file,
|
---|
| 435 | struct stat *sb,
|
---|
| 436 | void *userData UNUSED_PARAM,
|
---|
| 437 | int depth UNUSED_PARAM)
|
---|
[1765] | 438 | {
|
---|
| 439 | if (!follow_mounts) {
|
---|
| 440 | /* setfiles does not process across different mount points */
|
---|
| 441 | if (sb->st_dev != dev_id) {
|
---|
| 442 | return SKIP;
|
---|
| 443 | }
|
---|
| 444 | }
|
---|
| 445 | errors |= restore(file);
|
---|
| 446 | if (abort_on_error && errors)
|
---|
| 447 | return FALSE;
|
---|
| 448 | return TRUE;
|
---|
| 449 | }
|
---|
| 450 |
|
---|
| 451 |
|
---|
| 452 | static int canoncon(const char *path, unsigned lineno, char **contextp)
|
---|
| 453 | {
|
---|
| 454 | static const char err_msg[] ALIGN1 = "%s: line %u has invalid context %s";
|
---|
| 455 |
|
---|
| 456 | char *tmpcon;
|
---|
| 457 | char *context = *contextp;
|
---|
| 458 | int invalid = 0;
|
---|
| 459 |
|
---|
| 460 | #if ENABLE_FEATURE_SETFILES_CHECK_OPTION
|
---|
| 461 | if (policyfile) {
|
---|
| 462 | if (sepol_check_context(context) >= 0)
|
---|
| 463 | return 0;
|
---|
| 464 | /* Exit immediately if we're in checking mode. */
|
---|
| 465 | bb_error_msg_and_die(err_msg, path, lineno, context);
|
---|
| 466 | }
|
---|
| 467 | #endif
|
---|
| 468 |
|
---|
| 469 | if (security_canonicalize_context_raw(context, &tmpcon) < 0) {
|
---|
| 470 | if (errno != ENOENT) {
|
---|
| 471 | invalid = 1;
|
---|
| 472 | inc_err();
|
---|
| 473 | }
|
---|
| 474 | } else {
|
---|
| 475 | free(context);
|
---|
| 476 | *contextp = tmpcon;
|
---|
| 477 | }
|
---|
| 478 |
|
---|
| 479 | if (invalid) {
|
---|
| 480 | bb_error_msg(err_msg, path, lineno, context);
|
---|
| 481 | }
|
---|
| 482 |
|
---|
| 483 | return invalid;
|
---|
| 484 | }
|
---|
| 485 |
|
---|
| 486 | static int process_one(char *name)
|
---|
| 487 | {
|
---|
| 488 | struct stat sb;
|
---|
| 489 | int rc;
|
---|
| 490 |
|
---|
| 491 | rc = lstat(name, &sb);
|
---|
| 492 | if (rc < 0) {
|
---|
| 493 | if (FLAG_i_ignore_enoent && errno == ENOENT)
|
---|
| 494 | return 0;
|
---|
| 495 | bb_perror_msg("stat(%s)", name);
|
---|
| 496 | goto err;
|
---|
| 497 | }
|
---|
| 498 | dev_id = sb.st_dev;
|
---|
| 499 |
|
---|
| 500 | if (S_ISDIR(sb.st_mode) && recurse) {
|
---|
| 501 | if (recursive_action(name,
|
---|
[3232] | 502 | ACTION_RECURSE,
|
---|
| 503 | apply_spec,
|
---|
| 504 | apply_spec,
|
---|
| 505 | NULL, 0) != TRUE
|
---|
| 506 | ) {
|
---|
[1765] | 507 | bb_error_msg("error while labeling %s", name);
|
---|
| 508 | goto err;
|
---|
| 509 | }
|
---|
| 510 | } else {
|
---|
| 511 | rc = restore(name);
|
---|
| 512 | if (rc)
|
---|
| 513 | goto err;
|
---|
| 514 | }
|
---|
| 515 |
|
---|
| 516 | out:
|
---|
| 517 | if (add_assoc) {
|
---|
| 518 | if (FLAG_q_quiet)
|
---|
| 519 | set_matchpathcon_printf(&qprintf);
|
---|
| 520 | matchpathcon_filespec_eval();
|
---|
| 521 | set_matchpathcon_printf(NULL);
|
---|
| 522 | matchpathcon_filespec_destroy();
|
---|
| 523 | }
|
---|
| 524 |
|
---|
| 525 | return rc;
|
---|
| 526 |
|
---|
| 527 | err:
|
---|
| 528 | rc = -1;
|
---|
| 529 | goto out;
|
---|
| 530 | }
|
---|
| 531 |
|
---|
[2725] | 532 | int setfiles_main(int argc, char **argv) MAIN_EXTERNALLY_VISIBLE;
|
---|
| 533 | int setfiles_main(int argc UNUSED_PARAM, char **argv)
|
---|
[1765] | 534 | {
|
---|
| 535 | struct stat sb;
|
---|
| 536 | int rc, i = 0;
|
---|
| 537 | const char *input_filename = NULL;
|
---|
| 538 | char *buf = NULL;
|
---|
| 539 | size_t buf_len;
|
---|
| 540 | int flags;
|
---|
| 541 | llist_t *exclude_dir = NULL;
|
---|
| 542 | char *out_filename = NULL;
|
---|
| 543 |
|
---|
| 544 | INIT_G();
|
---|
| 545 |
|
---|
| 546 | if (applet_name[0] == 's') { /* "setfiles" */
|
---|
| 547 | /*
|
---|
| 548 | * setfiles:
|
---|
| 549 | * Recursive descent,
|
---|
| 550 | * Does not expand paths via realpath,
|
---|
| 551 | * Aborts on errors during the file tree walk,
|
---|
| 552 | * Try to track inode associations for conflict detection,
|
---|
| 553 | * Does not follow mounts,
|
---|
| 554 | * Validates all file contexts at init time.
|
---|
| 555 | */
|
---|
| 556 | recurse = 1;
|
---|
| 557 | abort_on_error = 1;
|
---|
| 558 | add_assoc = 1;
|
---|
| 559 | /* follow_mounts = 0; - already is */
|
---|
| 560 | matchpathcon_flags = MATCHPATHCON_VALIDATE | MATCHPATHCON_NOTRANS;
|
---|
| 561 | } else {
|
---|
| 562 | /*
|
---|
| 563 | * restorecon:
|
---|
| 564 | * No recursive descent unless -r/-R,
|
---|
| 565 | * Expands paths via realpath,
|
---|
| 566 | * Do not abort on errors during the file tree walk,
|
---|
| 567 | * Do not try to track inode associations for conflict detection,
|
---|
| 568 | * Follows mounts,
|
---|
| 569 | * Does lazy validation of contexts upon use.
|
---|
| 570 | */
|
---|
| 571 | expand_realpath = 1;
|
---|
| 572 | follow_mounts = 1;
|
---|
| 573 | matchpathcon_flags = MATCHPATHCON_NOTRANS;
|
---|
| 574 | /* restorecon only */
|
---|
| 575 | selinux_or_die();
|
---|
| 576 | }
|
---|
| 577 |
|
---|
| 578 | set_matchpathcon_flags(matchpathcon_flags);
|
---|
| 579 |
|
---|
| 580 | opt_complementary = "e::vv:v--p:p--v:v--q:q--v";
|
---|
| 581 | /* Option order must match OPT_x definitions! */
|
---|
| 582 | if (applet_name[0] == 'r') { /* restorecon */
|
---|
| 583 | flags = getopt32(argv, "de:f:ilnpqrsvo:FWR",
|
---|
| 584 | &exclude_dir, &input_filename, &out_filename, &verbose);
|
---|
| 585 | } else { /* setfiles */
|
---|
| 586 | flags = getopt32(argv, "de:f:ilnpqr:svo:FW"
|
---|
[2725] | 587 | IF_FEATURE_SETFILES_CHECK_OPTION("c:"),
|
---|
[1765] | 588 | &exclude_dir, &input_filename, &rootpath, &out_filename,
|
---|
[3232] | 589 | IF_FEATURE_SETFILES_CHECK_OPTION(&policyfile,)
|
---|
[1765] | 590 | &verbose);
|
---|
| 591 | }
|
---|
[2725] | 592 | argv += optind;
|
---|
[1765] | 593 |
|
---|
| 594 | #if ENABLE_FEATURE_SETFILES_CHECK_OPTION
|
---|
| 595 | if ((applet_name[0] == 's') && (flags & OPT_c)) {
|
---|
| 596 | FILE *policystream;
|
---|
| 597 |
|
---|
[2725] | 598 | policystream = xfopen_for_read(policyfile);
|
---|
[1765] | 599 | if (sepol_set_policydb_from_file(policystream) < 0) {
|
---|
| 600 | bb_error_msg_and_die("sepol_set_policydb_from_file on %s", policyfile);
|
---|
| 601 | }
|
---|
| 602 | fclose(policystream);
|
---|
| 603 |
|
---|
| 604 | /* Only process the specified file_contexts file, not
|
---|
[3232] | 605 | * any .homedirs or .local files, and do not perform
|
---|
| 606 | * context translations. */
|
---|
[1765] | 607 | set_matchpathcon_flags(MATCHPATHCON_BASEONLY |
|
---|
| 608 | MATCHPATHCON_NOTRANS |
|
---|
| 609 | MATCHPATHCON_VALIDATE);
|
---|
| 610 | }
|
---|
| 611 | #endif
|
---|
| 612 |
|
---|
| 613 | while (exclude_dir)
|
---|
| 614 | add_exclude(llist_pop(&exclude_dir));
|
---|
| 615 |
|
---|
| 616 | if (flags & OPT_o) {
|
---|
| 617 | outfile = stdout;
|
---|
| 618 | if (NOT_LONE_CHAR(out_filename, '-')) {
|
---|
[2725] | 619 | outfile = xfopen_for_write(out_filename);
|
---|
[1765] | 620 | }
|
---|
| 621 | }
|
---|
| 622 | if (applet_name[0] == 'r') { /* restorecon */
|
---|
| 623 | if (flags & (OPT_r | OPT_R))
|
---|
| 624 | recurse = 1;
|
---|
| 625 | } else { /* setfiles */
|
---|
| 626 | if (flags & OPT_r)
|
---|
| 627 | rootpathlen = strlen(rootpath);
|
---|
| 628 | }
|
---|
| 629 | if (flags & OPT_s) {
|
---|
| 630 | input_filename = "-";
|
---|
| 631 | add_assoc = 0;
|
---|
| 632 | }
|
---|
| 633 |
|
---|
| 634 | if (applet_name[0] == 's') { /* setfiles */
|
---|
| 635 | /* Use our own invalid context checking function so that
|
---|
[3232] | 636 | * we can support either checking against the active policy or
|
---|
| 637 | * checking against a binary policy file. */
|
---|
[1765] | 638 | set_matchpathcon_canoncon(&canoncon);
|
---|
[2725] | 639 | if (!argv[0])
|
---|
[1765] | 640 | bb_show_usage();
|
---|
[2725] | 641 | xstat(argv[0], &sb);
|
---|
[1765] | 642 | if (!S_ISREG(sb.st_mode)) {
|
---|
[2725] | 643 | bb_error_msg_and_die("spec file %s is not a regular file", argv[0]);
|
---|
[1765] | 644 | }
|
---|
| 645 | /* Load the file contexts configuration and check it. */
|
---|
[2725] | 646 | rc = matchpathcon_init(argv[0]);
|
---|
[1765] | 647 | if (rc < 0) {
|
---|
[2725] | 648 | bb_simple_perror_msg_and_die(argv[0]);
|
---|
[1765] | 649 | }
|
---|
| 650 | if (nerr)
|
---|
[2725] | 651 | exit(EXIT_FAILURE);
|
---|
| 652 | argv++;
|
---|
[1765] | 653 | }
|
---|
| 654 |
|
---|
| 655 | if (input_filename) {
|
---|
| 656 | ssize_t len;
|
---|
| 657 | FILE *f = stdin;
|
---|
| 658 |
|
---|
| 659 | if (NOT_LONE_CHAR(input_filename, '-'))
|
---|
[2725] | 660 | f = xfopen_for_read(input_filename);
|
---|
[1765] | 661 | while ((len = getline(&buf, &buf_len, f)) > 0) {
|
---|
| 662 | buf[len - 1] = '\0';
|
---|
| 663 | errors |= process_one(buf);
|
---|
| 664 | }
|
---|
| 665 | if (ENABLE_FEATURE_CLEAN_UP)
|
---|
| 666 | fclose_if_not_stdin(f);
|
---|
| 667 | } else {
|
---|
[2725] | 668 | if (!argv[0])
|
---|
[1765] | 669 | bb_show_usage();
|
---|
[2725] | 670 | for (i = 0; argv[i]; i++) {
|
---|
[1765] | 671 | errors |= process_one(argv[i]);
|
---|
| 672 | }
|
---|
| 673 | }
|
---|
| 674 |
|
---|
| 675 | if (FLAG_W_warn_no_match)
|
---|
| 676 | matchpathcon_checkmatches(argv[0]);
|
---|
| 677 |
|
---|
| 678 | if (ENABLE_FEATURE_CLEAN_UP && outfile)
|
---|
| 679 | fclose(outfile);
|
---|
| 680 |
|
---|
| 681 | return errors;
|
---|
| 682 | }
|
---|