1 | /* vi: set sw=4 ts=4: */
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2 | /*
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3 | * ipcs.c -- provides information on allocated ipc resources.
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4 | *
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5 | * 01 Sept 2004 - Rodney Radford <rradford@mindspring.com>
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6 | * Adapted for busybox from util-linux-2.12a.
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7 | *
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8 | * Licensed under GPLv2 or later, see file LICENSE in this tarball for details.
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9 | */
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10 |
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11 | /* X/OPEN tells us to use <sys/{types,ipc,sem}.h> for semctl() */
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12 | /* X/OPEN tells us to use <sys/{types,ipc,msg}.h> for msgctl() */
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13 | /* X/OPEN tells us to use <sys/{types,ipc,shm}.h> for shmctl() */
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14 | #include <sys/types.h>
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15 | #include <sys/ipc.h>
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16 | #include <sys/sem.h>
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17 | #include <sys/msg.h>
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18 | #include <sys/shm.h>
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19 |
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20 | #include "libbb.h"
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21 |
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22 | /*-------------------------------------------------------------------*/
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23 | /* SHM_DEST and SHM_LOCKED are defined in kernel headers,
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24 | but inside #ifdef __KERNEL__ ... #endif */
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25 | #ifndef SHM_DEST
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26 | /* shm_mode upper byte flags */
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27 | #define SHM_DEST 01000 /* segment will be destroyed on last detach */
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28 | #define SHM_LOCKED 02000 /* segment will not be swapped */
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29 | #endif
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30 |
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31 | /* For older kernels the same holds for the defines below */
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32 | #ifndef MSG_STAT
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33 | #define MSG_STAT 11
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34 | #define MSG_INFO 12
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35 | #endif
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36 |
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37 | #ifndef SHM_STAT
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38 | #define SHM_STAT 13
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39 | #define SHM_INFO 14
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40 | struct shm_info {
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41 | int used_ids;
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42 | ulong shm_tot; /* total allocated shm */
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43 | ulong shm_rss; /* total resident shm */
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44 | ulong shm_swp; /* total swapped shm */
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45 | ulong swap_attempts;
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46 | ulong swap_successes;
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47 | };
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48 | #endif
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49 |
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50 | #ifndef SEM_STAT
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51 | #define SEM_STAT 18
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52 | #define SEM_INFO 19
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53 | #endif
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54 |
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55 | /* Some versions of libc only define IPC_INFO when __USE_GNU is defined. */
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56 | #ifndef IPC_INFO
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57 | #define IPC_INFO 3
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58 | #endif
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59 | /*-------------------------------------------------------------------*/
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60 |
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61 | /* The last arg of semctl is a union semun, but where is it defined?
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62 | X/OPEN tells us to define it ourselves, but until recently
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63 | Linux include files would also define it. */
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64 | #if defined(__GNU_LIBRARY__) && !defined(_SEM_SEMUN_UNDEFINED)
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65 | /* union semun is defined by including <sys/sem.h> */
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66 | #else
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67 | /* according to X/OPEN we have to define it ourselves */
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68 | union semun {
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69 | int val;
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70 | struct semid_ds *buf;
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71 | unsigned short int *array;
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72 | struct seminfo *__buf;
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73 | };
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74 | #endif
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75 |
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76 | /* X/OPEN (Jan 1987) does not define fields key, seq in struct ipc_perm;
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77 | libc 4/5 does not mention struct ipc_term at all, but includes
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78 | <linux/ipc.h>, which defines a struct ipc_perm with such fields.
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79 | glibc-1.09 has no support for sysv ipc.
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80 | glibc 2 uses __key, __seq */
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81 | #if defined(__GNU_LIBRARY__) && __GNU_LIBRARY__ > 1
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82 | #define KEY __key
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83 | #else
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84 | #define KEY key
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85 | #endif
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86 |
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87 | #define LIMITS 1
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88 | #define STATUS 2
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89 | #define CREATOR 3
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90 | #define TIME 4
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91 | #define PID 5
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92 |
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93 | static char format;
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94 |
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95 | static void print_perms(int id, struct ipc_perm *ipcp)
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96 | {
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97 | struct passwd *pw;
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98 | struct group *gr;
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99 |
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100 | printf("%-10d %-10o", id, ipcp->mode & 0777);
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101 |
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102 | if ((pw = getpwuid(ipcp->cuid)))
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103 | printf(" %-10s", pw->pw_name);
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104 | else
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105 | printf(" %-10d", ipcp->cuid);
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106 | if ((gr = getgrgid(ipcp->cgid)))
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107 | printf(" %-10s", gr->gr_name);
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108 | else
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109 | printf(" %-10d", ipcp->cgid);
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110 |
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111 | if ((pw = getpwuid(ipcp->uid)))
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112 | printf(" %-10s", pw->pw_name);
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113 | else
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114 | printf(" %-10d", ipcp->uid);
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115 | if ((gr = getgrgid(ipcp->gid)))
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116 | printf(" %-10s\n", gr->gr_name);
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117 | else
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118 | printf(" %-10d\n", ipcp->gid);
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119 | }
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120 |
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121 |
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122 | static void do_shm(void)
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123 | {
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124 | int maxid, shmid, id;
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125 | struct shmid_ds shmseg;
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126 | struct shm_info shm_info;
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127 | struct shminfo shminfo;
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128 | struct ipc_perm *ipcp = &shmseg.shm_perm;
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129 | struct passwd *pw;
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130 |
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131 | maxid = shmctl(0, SHM_INFO, (struct shmid_ds *) (void *) &shm_info);
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132 | if (maxid < 0) {
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133 | printf("kernel not configured for %s\n", "shared memory");
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134 | return;
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135 | }
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136 |
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137 | switch (format) {
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138 | case LIMITS:
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139 | printf("------ Shared Memory %s --------\n", "Limits");
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140 | if ((shmctl(0, IPC_INFO, (struct shmid_ds *) (void *) &shminfo)) < 0)
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141 | return;
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142 | /* glibc 2.1.3 and all earlier libc's have ints as fields
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143 | of struct shminfo; glibc 2.1.91 has unsigned long; ach */
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144 | printf("max number of segments = %lu\n"
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145 | "max seg size (kbytes) = %lu\n"
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146 | "max total shared memory (pages) = %lu\n"
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147 | "min seg size (bytes) = %lu\n",
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148 | (unsigned long) shminfo.shmmni,
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149 | (unsigned long) (shminfo.shmmax >> 10),
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150 | (unsigned long) shminfo.shmall,
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151 | (unsigned long) shminfo.shmmin);
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152 | return;
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153 |
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154 | case STATUS:
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155 | printf("------ Shared Memory %s --------\n", "Status");
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156 | printf( "segments allocated %d\n"
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157 | "pages allocated %ld\n"
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158 | "pages resident %ld\n"
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159 | "pages swapped %ld\n"
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160 | "Swap performance: %ld attempts\t%ld successes\n",
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161 | shm_info.used_ids,
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162 | shm_info.shm_tot,
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163 | shm_info.shm_rss,
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164 | shm_info.shm_swp,
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165 | shm_info.swap_attempts, shm_info.swap_successes);
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166 | return;
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167 |
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168 | case CREATOR:
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169 | printf("------ Shared Memory %s --------\n", "Segment Creators/Owners");
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170 | printf( "%-10s %-10s %-10s %-10s %-10s %-10s\n",
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171 | "shmid", "perms", "cuid", "cgid", "uid", "gid");
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172 | break;
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173 |
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174 | case TIME:
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175 | printf("------ Shared Memory %s --------\n", "Attach/Detach/Change Times");
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176 | printf( "%-10s %-10s %-20s %-20s %-20s\n",
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177 | "shmid", "owner", "attached", "detached", "changed");
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178 | break;
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179 |
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180 | case PID:
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181 | printf("------ Shared Memory %s --------\n", "Creator/Last-op");
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182 | printf( "%-10s %-10s %-10s %-10s\n",
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183 | "shmid", "owner", "cpid", "lpid");
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184 | break;
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185 |
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186 | default:
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187 | printf("------ Shared Memory %s --------\n", "Segments");
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188 | printf( "%-10s %-10s %-10s %-10s %-10s %-10s %-12s\n",
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189 | "key", "shmid", "owner", "perms", "bytes", "nattch",
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190 | "status");
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191 | break;
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192 | }
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193 |
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194 | for (id = 0; id <= maxid; id++) {
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195 | shmid = shmctl(id, SHM_STAT, &shmseg);
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196 | if (shmid < 0)
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197 | continue;
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198 | if (format == CREATOR) {
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199 | print_perms(shmid, ipcp);
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200 | continue;
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201 | }
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202 | pw = getpwuid(ipcp->uid);
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203 | switch (format) {
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204 | case TIME:
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205 | if (pw)
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206 | printf("%-10d %-10.10s", shmid, pw->pw_name);
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207 | else
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208 | printf("%-10d %-10d", shmid, ipcp->uid);
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209 | /* ctime uses static buffer: use separate calls */
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210 | printf(" %-20.16s", shmseg.shm_atime
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211 | ? ctime(&shmseg.shm_atime) + 4 : "Not set");
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212 | printf(" %-20.16s", shmseg.shm_dtime
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213 | ? ctime(&shmseg.shm_dtime) + 4 : "Not set");
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214 | printf(" %-20.16s\n", shmseg.shm_ctime
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215 | ? ctime(&shmseg.shm_ctime) + 4 : "Not set");
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216 | break;
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217 | case PID:
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218 | if (pw)
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219 | printf("%-10d %-10.10s", shmid, pw->pw_name);
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220 | else
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221 | printf("%-10d %-10d", shmid, ipcp->uid);
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222 | printf(" %-10d %-10d\n", shmseg.shm_cpid, shmseg.shm_lpid);
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223 | break;
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224 |
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225 | default:
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226 | printf("0x%08x ", ipcp->KEY);
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227 | if (pw)
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228 | printf("%-10d %-10.10s", shmid, pw->pw_name);
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229 | else
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230 | printf("%-10d %-10d", shmid, ipcp->uid);
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231 | printf(" %-10o %-10lu %-10ld %-6s %-6s\n", ipcp->mode & 0777,
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232 | /*
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233 | * earlier: int, Austin has size_t
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234 | */
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235 | (unsigned long) shmseg.shm_segsz,
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236 | /*
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237 | * glibc-2.1.3 and earlier has unsigned short;
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238 | * Austin has shmatt_t
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239 | */
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240 | (long) shmseg.shm_nattch,
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241 | ipcp->mode & SHM_DEST ? "dest" : " ",
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242 | ipcp->mode & SHM_LOCKED ? "locked" : " ");
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243 | break;
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244 | }
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245 | }
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246 | }
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247 |
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248 |
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249 | static void do_sem(void)
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250 | {
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251 | int maxid, semid, id;
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252 | struct semid_ds semary;
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253 | struct seminfo seminfo;
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254 | struct ipc_perm *ipcp = &semary.sem_perm;
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255 | struct passwd *pw;
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256 | union semun arg;
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257 |
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258 | arg.array = (ushort *) (void *) &seminfo;
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259 | maxid = semctl(0, 0, SEM_INFO, arg);
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260 | if (maxid < 0) {
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261 | printf("kernel not configured for %s\n", "semaphores");
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262 | return;
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263 | }
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264 |
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265 | switch (format) {
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266 | case LIMITS:
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267 | printf("------ Semaphore %s --------\n", "Limits");
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268 | arg.array = (ushort *) (void *) &seminfo; /* damn union */
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269 | if ((semctl(0, 0, IPC_INFO, arg)) < 0)
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270 | return;
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271 | printf("max number of arrays = %d\n"
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272 | "max semaphores per array = %d\n"
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273 | "max semaphores system wide = %d\n"
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274 | "max ops per semop call = %d\n"
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275 | "semaphore max value = %d\n",
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276 | seminfo.semmni,
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277 | seminfo.semmsl,
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278 | seminfo.semmns, seminfo.semopm, seminfo.semvmx);
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279 | return;
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280 |
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281 | case STATUS:
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282 | printf("------ Semaphore %s --------\n", "Status");
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283 | printf( "used arrays = %d\n"
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284 | "allocated semaphores = %d\n",
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285 | seminfo.semusz, seminfo.semaem);
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286 | return;
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287 |
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288 | case CREATOR:
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289 | printf("------ Semaphore %s --------\n", "Arrays Creators/Owners");
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290 | printf( "%-10s %-10s %-10s %-10s %-10s %-10s\n",
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291 | "semid", "perms", "cuid", "cgid", "uid", "gid");
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292 | break;
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293 |
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294 | case TIME:
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295 | printf("------ Shared Memory %s --------\n", "Operation/Change Times");
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296 | printf( "%-8s %-10s %-26.24s %-26.24s\n",
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297 | "shmid", "owner", "last-op", "last-changed");
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298 | break;
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299 |
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300 | case PID:
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301 | break;
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302 |
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303 | default:
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304 | printf("------ Semaphore %s --------\n", "Arrays");
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305 | printf( "%-10s %-10s %-10s %-10s %-10s\n",
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306 | "key", "semid", "owner", "perms", "nsems");
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307 | break;
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308 | }
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309 |
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310 | for (id = 0; id <= maxid; id++) {
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311 | arg.buf = (struct semid_ds *) &semary;
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312 | semid = semctl(id, 0, SEM_STAT, arg);
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313 | if (semid < 0)
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314 | continue;
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315 | if (format == CREATOR) {
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316 | print_perms(semid, ipcp);
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317 | continue;
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318 | }
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319 | pw = getpwuid(ipcp->uid);
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320 | switch (format) {
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321 | case TIME:
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322 | if (pw)
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323 | printf("%-8d %-10.10s", semid, pw->pw_name);
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324 | else
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325 | printf("%-8d %-10d", semid, ipcp->uid);
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326 | /* ctime uses static buffer: use separate calls */
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327 | printf(" %-26.24s", semary.sem_otime
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328 | ? ctime(&semary.sem_otime) : "Not set");
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329 | printf(" %-26.24s\n", semary.sem_ctime
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330 | ? ctime(&semary.sem_ctime) : "Not set");
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331 | break;
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332 | case PID:
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333 | break;
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334 |
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335 | default:
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336 | printf("0x%08x ", ipcp->KEY);
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337 | if (pw)
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338 | printf("%-10d %-10.9s", semid, pw->pw_name);
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339 | else
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340 | printf("%-10d %-9d", semid, ipcp->uid);
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341 | printf(" %-10o %-10ld\n", ipcp->mode & 0777,
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342 | /*
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343 | * glibc-2.1.3 and earlier has unsigned short;
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344 | * glibc-2.1.91 has variation between
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345 | * unsigned short and unsigned long
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346 | * Austin prescribes unsigned short.
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347 | */
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348 | (long) semary.sem_nsems);
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349 | break;
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350 | }
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351 | }
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352 | }
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353 |
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354 |
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355 | static void do_msg(void)
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356 | {
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357 | int maxid, msqid, id;
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358 | struct msqid_ds msgque;
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359 | struct msginfo msginfo;
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360 | struct ipc_perm *ipcp = &msgque.msg_perm;
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361 | struct passwd *pw;
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362 |
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363 | maxid = msgctl(0, MSG_INFO, (struct msqid_ds *) (void *) &msginfo);
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364 | if (maxid < 0) {
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365 | printf("kernel not configured for %s\n", "message queues");
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366 | return;
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367 | }
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368 |
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369 | switch (format) {
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370 | case LIMITS:
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371 | if ((msgctl(0, IPC_INFO, (struct msqid_ds *) (void *) &msginfo)) < 0)
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372 | return;
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373 | printf("------ Message%s --------\n", "s: Limits");
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374 | printf( "max queues system wide = %d\n"
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375 | "max size of message (bytes) = %d\n"
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376 | "default max size of queue (bytes) = %d\n",
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377 | msginfo.msgmni, msginfo.msgmax, msginfo.msgmnb);
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378 | return;
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379 |
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380 | case STATUS:
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381 | printf("------ Message%s --------\n", "s: Status");
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382 | printf( "allocated queues = %d\n"
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383 | "used headers = %d\n"
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384 | "used space = %d bytes\n",
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385 | msginfo.msgpool, msginfo.msgmap, msginfo.msgtql);
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386 | return;
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387 |
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388 | case CREATOR:
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389 | printf("------ Message%s --------\n", " Queues: Creators/Owners");
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390 | printf( "%-10s %-10s %-10s %-10s %-10s %-10s\n",
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391 | "msqid", "perms", "cuid", "cgid", "uid", "gid");
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392 | break;
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393 |
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394 | case TIME:
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395 | printf("------ Message%s --------\n", " Queues Send/Recv/Change Times");
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396 | printf( "%-8s %-10s %-20s %-20s %-20s\n",
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397 | "msqid", "owner", "send", "recv", "change");
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398 | break;
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399 |
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400 | case PID:
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401 | printf("------ Message%s --------\n", " Queues PIDs");
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402 | printf( "%-10s %-10s %-10s %-10s\n",
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403 | "msqid", "owner", "lspid", "lrpid");
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404 | break;
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405 |
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406 | default:
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407 | printf("------ Message%s --------\n", " Queues");
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408 | printf( "%-10s %-10s %-10s %-10s %-12s %-12s\n",
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409 | "key", "msqid", "owner", "perms", "used-bytes", "messages");
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410 | break;
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411 | }
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412 |
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413 | for (id = 0; id <= maxid; id++) {
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414 | msqid = msgctl(id, MSG_STAT, &msgque);
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415 | if (msqid < 0)
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416 | continue;
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417 | if (format == CREATOR) {
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418 | print_perms(msqid, ipcp);
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419 | continue;
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420 | }
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421 | pw = getpwuid(ipcp->uid);
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422 | switch (format) {
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423 | case TIME:
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424 | if (pw)
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425 | printf("%-8d %-10.10s", msqid, pw->pw_name);
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426 | else
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427 | printf("%-8d %-10d", msqid, ipcp->uid);
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428 | printf(" %-20.16s", msgque.msg_stime
|
---|
429 | ? ctime(&msgque.msg_stime) + 4 : "Not set");
|
---|
430 | printf(" %-20.16s", msgque.msg_rtime
|
---|
431 | ? ctime(&msgque.msg_rtime) + 4 : "Not set");
|
---|
432 | printf(" %-20.16s\n", msgque.msg_ctime
|
---|
433 | ? ctime(&msgque.msg_ctime) + 4 : "Not set");
|
---|
434 | break;
|
---|
435 | case PID:
|
---|
436 | if (pw)
|
---|
437 | printf("%-8d %-10.10s", msqid, pw->pw_name);
|
---|
438 | else
|
---|
439 | printf("%-8d %-10d", msqid, ipcp->uid);
|
---|
440 | printf(" %5d %5d\n", msgque.msg_lspid, msgque.msg_lrpid);
|
---|
441 | break;
|
---|
442 |
|
---|
443 | default:
|
---|
444 | printf("0x%08x ", ipcp->KEY);
|
---|
445 | if (pw)
|
---|
446 | printf("%-10d %-10.10s", msqid, pw->pw_name);
|
---|
447 | else
|
---|
448 | printf("%-10d %-10d", msqid, ipcp->uid);
|
---|
449 | printf(" %-10o %-12ld %-12ld\n", ipcp->mode & 0777,
|
---|
450 | /*
|
---|
451 | * glibc-2.1.3 and earlier has unsigned short;
|
---|
452 | * glibc-2.1.91 has variation between
|
---|
453 | * unsigned short, unsigned long
|
---|
454 | * Austin has msgqnum_t
|
---|
455 | */
|
---|
456 | (long) msgque.msg_cbytes, (long) msgque.msg_qnum);
|
---|
457 | break;
|
---|
458 | }
|
---|
459 | }
|
---|
460 | }
|
---|
461 |
|
---|
462 |
|
---|
463 | static void print_shm(int shmid)
|
---|
464 | {
|
---|
465 | struct shmid_ds shmds;
|
---|
466 | struct ipc_perm *ipcp = &shmds.shm_perm;
|
---|
467 |
|
---|
468 | if (shmctl(shmid, IPC_STAT, &shmds) == -1) {
|
---|
469 | bb_perror_msg("shmctl");
|
---|
470 | return;
|
---|
471 | }
|
---|
472 |
|
---|
473 | printf("\nShared memory Segment shmid=%d\n"
|
---|
474 | "uid=%d\tgid=%d\tcuid=%d\tcgid=%d\n"
|
---|
475 | "mode=%#o\taccess_perms=%#o\n"
|
---|
476 | "bytes=%ld\tlpid=%d\tcpid=%d\tnattch=%ld\n",
|
---|
477 | shmid,
|
---|
478 | ipcp->uid, ipcp->gid, ipcp->cuid, ipcp->cgid,
|
---|
479 | ipcp->mode, ipcp->mode & 0777,
|
---|
480 | (long) shmds.shm_segsz, shmds.shm_lpid, shmds.shm_cpid,
|
---|
481 | (long) shmds.shm_nattch);
|
---|
482 | printf("att_time=%-26.24s\n",
|
---|
483 | shmds.shm_atime ? ctime(&shmds.shm_atime) : "Not set");
|
---|
484 | printf("det_time=%-26.24s\n",
|
---|
485 | shmds.shm_dtime ? ctime(&shmds.shm_dtime) : "Not set");
|
---|
486 | printf("change_time=%-26.24s\n\n", ctime(&shmds.shm_ctime));
|
---|
487 | }
|
---|
488 |
|
---|
489 |
|
---|
490 | static void print_msg(int msqid)
|
---|
491 | {
|
---|
492 | struct msqid_ds buf;
|
---|
493 | struct ipc_perm *ipcp = &buf.msg_perm;
|
---|
494 |
|
---|
495 | if (msgctl(msqid, IPC_STAT, &buf) == -1) {
|
---|
496 | bb_perror_msg("msgctl");
|
---|
497 | return;
|
---|
498 | }
|
---|
499 |
|
---|
500 | printf("\nMessage Queue msqid=%d\n"
|
---|
501 | "uid=%d\tgid=%d\tcuid=%d\tcgid=%d\tmode=%#o\n"
|
---|
502 | "cbytes=%ld\tqbytes=%ld\tqnum=%ld\tlspid=%d\tlrpid=%d\n",
|
---|
503 | msqid, ipcp->uid, ipcp->gid, ipcp->cuid, ipcp->cgid, ipcp->mode,
|
---|
504 | /*
|
---|
505 | * glibc-2.1.3 and earlier has unsigned short;
|
---|
506 | * glibc-2.1.91 has variation between
|
---|
507 | * unsigned short, unsigned long
|
---|
508 | * Austin has msgqnum_t (for msg_qbytes)
|
---|
509 | */
|
---|
510 | (long) buf.msg_cbytes, (long) buf.msg_qbytes,
|
---|
511 | (long) buf.msg_qnum, buf.msg_lspid, buf.msg_lrpid);
|
---|
512 |
|
---|
513 | printf("send_time=%-26.24s\n",
|
---|
514 | buf.msg_stime ? ctime(&buf.msg_stime) : "Not set");
|
---|
515 | printf("rcv_time=%-26.24s\n",
|
---|
516 | buf.msg_rtime ? ctime(&buf.msg_rtime) : "Not set");
|
---|
517 | printf("change_time=%-26.24s\n\n",
|
---|
518 | buf.msg_ctime ? ctime(&buf.msg_ctime) : "Not set");
|
---|
519 | }
|
---|
520 |
|
---|
521 | static void print_sem(int semid)
|
---|
522 | {
|
---|
523 | struct semid_ds semds;
|
---|
524 | struct ipc_perm *ipcp = &semds.sem_perm;
|
---|
525 | union semun arg;
|
---|
526 | unsigned int i;
|
---|
527 |
|
---|
528 | arg.buf = &semds;
|
---|
529 | if (semctl(semid, 0, IPC_STAT, arg)) {
|
---|
530 | bb_perror_msg("semctl");
|
---|
531 | return;
|
---|
532 | }
|
---|
533 |
|
---|
534 | printf("\nSemaphore Array semid=%d\n"
|
---|
535 | "uid=%d\t gid=%d\t cuid=%d\t cgid=%d\n"
|
---|
536 | "mode=%#o, access_perms=%#o\n"
|
---|
537 | "nsems = %ld\n"
|
---|
538 | "otime = %-26.24s\n",
|
---|
539 | semid,
|
---|
540 | ipcp->uid, ipcp->gid, ipcp->cuid, ipcp->cgid,
|
---|
541 | ipcp->mode, ipcp->mode & 0777,
|
---|
542 | (long) semds.sem_nsems,
|
---|
543 | semds.sem_otime ? ctime(&semds.sem_otime) : "Not set");
|
---|
544 | printf("ctime = %-26.24s\n"
|
---|
545 | "%-10s %-10s %-10s %-10s %-10s\n",
|
---|
546 | ctime(&semds.sem_ctime),
|
---|
547 | "semnum", "value", "ncount", "zcount", "pid");
|
---|
548 |
|
---|
549 | arg.val = 0;
|
---|
550 | for (i = 0; i < semds.sem_nsems; i++) {
|
---|
551 | int val, ncnt, zcnt, pid;
|
---|
552 |
|
---|
553 | val = semctl(semid, i, GETVAL, arg);
|
---|
554 | ncnt = semctl(semid, i, GETNCNT, arg);
|
---|
555 | zcnt = semctl(semid, i, GETZCNT, arg);
|
---|
556 | pid = semctl(semid, i, GETPID, arg);
|
---|
557 | if (val < 0 || ncnt < 0 || zcnt < 0 || pid < 0) {
|
---|
558 | bb_perror_msg_and_die("semctl");
|
---|
559 | }
|
---|
560 | printf("%-10d %-10d %-10d %-10d %-10d\n", i, val, ncnt, zcnt, pid);
|
---|
561 | }
|
---|
562 | puts("");
|
---|
563 | }
|
---|
564 |
|
---|
565 | int ipcs_main(int argc, char **argv);
|
---|
566 | int ipcs_main(int argc, char **argv)
|
---|
567 | {
|
---|
568 | int id = 0;
|
---|
569 | unsigned flags = 0;
|
---|
570 | unsigned opt;
|
---|
571 | char *opt_i;
|
---|
572 | #define flag_print (1<<0)
|
---|
573 | #define flag_msg (1<<1)
|
---|
574 | #define flag_sem (1<<2)
|
---|
575 | #define flag_shm (1<<3)
|
---|
576 |
|
---|
577 | opt = getopt32(argv, "i:aqsmtcplu", &opt_i);
|
---|
578 | if (opt & 0x1) { // -i
|
---|
579 | id = xatoi(opt_i);
|
---|
580 | flags |= flag_print;
|
---|
581 | }
|
---|
582 | if (opt & 0x2) flags |= flag_msg | flag_sem | flag_shm; // -a
|
---|
583 | if (opt & 0x4) flags |= flag_msg; // -q
|
---|
584 | if (opt & 0x8) flags |= flag_sem; // -s
|
---|
585 | if (opt & 0x10) flags |= flag_shm; // -m
|
---|
586 | if (opt & 0x20) format = TIME; // -t
|
---|
587 | if (opt & 0x40) format = CREATOR; // -c
|
---|
588 | if (opt & 0x80) format = PID; // -p
|
---|
589 | if (opt & 0x100) format = LIMITS; // -l
|
---|
590 | if (opt & 0x200) format = STATUS; // -u
|
---|
591 |
|
---|
592 | if (flags & flag_print) {
|
---|
593 | if (flags & flag_shm) {
|
---|
594 | print_shm(id);
|
---|
595 | fflush_stdout_and_exit(0);
|
---|
596 | }
|
---|
597 | if (flags & flag_sem) {
|
---|
598 | print_sem(id);
|
---|
599 | fflush_stdout_and_exit(0);
|
---|
600 | }
|
---|
601 | if (flags & flag_msg) {
|
---|
602 | print_msg(id);
|
---|
603 | fflush_stdout_and_exit(0);
|
---|
604 | }
|
---|
605 | bb_show_usage();
|
---|
606 | }
|
---|
607 |
|
---|
608 | if (!(flags & (flag_shm | flag_msg | flag_sem)))
|
---|
609 | flags |= flag_msg | flag_shm | flag_sem;
|
---|
610 | puts("");
|
---|
611 |
|
---|
612 | if (flags & flag_shm) {
|
---|
613 | do_shm();
|
---|
614 | puts("");
|
---|
615 | }
|
---|
616 | if (flags & flag_sem) {
|
---|
617 | do_sem();
|
---|
618 | puts("");
|
---|
619 | }
|
---|
620 | if (flags & flag_msg) {
|
---|
621 | do_msg();
|
---|
622 | puts("");
|
---|
623 | }
|
---|
624 | fflush_stdout_and_exit(0);
|
---|
625 | }
|
---|