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 source tree.
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9 | */
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10 |
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11 | //usage:#define ipcs_trivial_usage
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12 | //usage: "[[-smq] -i shmid] | [[-asmq] [-tcplu]]"
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13 | //usage:#define ipcs_full_usage "\n\n"
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14 | //usage: " -i Show specific resource"
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15 | //usage: "\nResource specification:"
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16 | //usage: "\n -m Shared memory segments"
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17 | //usage: "\n -q Message queues"
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18 | //usage: "\n -s Semaphore arrays"
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19 | //usage: "\n -a All (default)"
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20 | //usage: "\nOutput format:"
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21 | //usage: "\n -t Time"
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22 | //usage: "\n -c Creator"
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23 | //usage: "\n -p Pid"
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24 | //usage: "\n -l Limits"
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25 | //usage: "\n -u Summary"
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26 |
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27 | /* X/OPEN tells us to use <sys/{types,ipc,sem}.h> for semctl() */
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28 | /* X/OPEN tells us to use <sys/{types,ipc,msg}.h> for msgctl() */
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29 | /* X/OPEN tells us to use <sys/{types,ipc,shm}.h> for shmctl() */
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30 | #include <sys/types.h>
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31 | #include <sys/ipc.h>
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32 | #include <sys/sem.h>
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33 | #include <sys/msg.h>
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34 | #include <sys/shm.h>
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35 |
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36 | #include "libbb.h"
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37 |
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38 | /*-------------------------------------------------------------------*/
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39 | /* SHM_DEST and SHM_LOCKED are defined in kernel headers,
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40 | but inside #ifdef __KERNEL__ ... #endif */
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41 | #ifndef SHM_DEST
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42 | /* shm_mode upper byte flags */
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43 | #define SHM_DEST 01000 /* segment will be destroyed on last detach */
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44 | #define SHM_LOCKED 02000 /* segment will not be swapped */
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45 | #endif
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46 |
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47 | /* For older kernels the same holds for the defines below */
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48 | #ifndef MSG_STAT
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49 | #define MSG_STAT 11
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50 | #define MSG_INFO 12
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51 | #endif
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52 |
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53 | #ifndef SHM_STAT
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54 | #define SHM_STAT 13
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55 | #define SHM_INFO 14
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56 | struct shm_info {
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57 | int used_ids;
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58 | unsigned long shm_tot; /* total allocated shm */
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59 | unsigned long shm_rss; /* total resident shm */
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60 | unsigned long shm_swp; /* total swapped shm */
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61 | unsigned long swap_attempts;
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62 | unsigned long swap_successes;
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63 | };
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64 | #endif
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65 |
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66 | #ifndef SEM_STAT
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67 | #define SEM_STAT 18
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68 | #define SEM_INFO 19
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69 | #endif
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70 |
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71 | /* Some versions of libc only define IPC_INFO when __USE_GNU is defined. */
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72 | #ifndef IPC_INFO
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73 | #define IPC_INFO 3
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74 | #endif
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75 | /*-------------------------------------------------------------------*/
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76 |
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77 | /* The last arg of semctl is a union semun, but where is it defined?
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78 | X/OPEN tells us to define it ourselves, but until recently
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79 | Linux include files would also define it. */
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80 | #if defined(__GNU_LIBRARY__) && !defined(_SEM_SEMUN_UNDEFINED)
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81 | /* union semun is defined by including <sys/sem.h> */
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82 | #else
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83 | /* according to X/OPEN we have to define it ourselves */
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84 | union semun {
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85 | int val;
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86 | struct semid_ds *buf;
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87 | unsigned short *array;
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88 | struct seminfo *__buf;
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89 | };
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90 | #endif
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91 |
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92 | /* X/OPEN (Jan 1987) does not define fields key, seq in struct ipc_perm;
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93 | libc 4/5 does not mention struct ipc_term at all, but includes
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94 | <linux/ipc.h>, which defines a struct ipc_perm with such fields.
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95 | glibc-1.09 has no support for sysv ipc.
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96 | glibc 2 uses __key, __seq */
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97 | #if defined(__GNU_LIBRARY__) && __GNU_LIBRARY__ > 1
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98 | #define KEY __key
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99 | #else
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100 | #define KEY key
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101 | #endif
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102 |
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103 | #define LIMITS 1
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104 | #define STATUS 2
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105 | #define CREATOR 3
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106 | #define TIME 4
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107 | #define PID 5
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108 |
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109 | static char format;
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110 |
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111 | static void print_perms(int id, struct ipc_perm *ipcp)
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112 | {
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113 | struct passwd *pw;
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114 | struct group *gr;
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115 |
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116 | printf("%-10d %-10o", id, ipcp->mode & 0777);
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117 |
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118 | pw = getpwuid(ipcp->cuid);
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119 | if (pw) printf(" %-10s", pw->pw_name);
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120 | else printf(" %-10d", ipcp->cuid);
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121 | gr = getgrgid(ipcp->cgid);
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122 | if (gr) printf(" %-10s", gr->gr_name);
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123 | else printf(" %-10d", ipcp->cgid);
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124 |
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125 | pw = getpwuid(ipcp->uid);
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126 | if (pw) printf(" %-10s", pw->pw_name);
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127 | else printf(" %-10d", ipcp->uid);
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128 | gr = getgrgid(ipcp->gid);
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129 | if (gr) printf(" %-10s\n", gr->gr_name);
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130 | else printf(" %-10d\n", ipcp->gid);
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131 | }
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132 |
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133 |
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134 | static NOINLINE void do_shm(void)
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135 | {
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136 | int maxid, shmid, id;
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137 | struct shmid_ds shmseg;
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138 | struct shm_info shm_info;
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139 | struct shminfo shminfo;
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140 | struct ipc_perm *ipcp = &shmseg.shm_perm;
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141 | struct passwd *pw;
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142 |
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143 | maxid = shmctl(0, SHM_INFO, (struct shmid_ds *) (void *) &shm_info);
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144 | if (maxid < 0) {
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145 | printf("kernel not configured for %s\n", "shared memory");
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146 | return;
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147 | }
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148 |
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149 | switch (format) {
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150 | case LIMITS:
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151 | printf("------ Shared Memory %s --------\n", "Limits");
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152 | if ((shmctl(0, IPC_INFO, (struct shmid_ds *) (void *) &shminfo)) < 0)
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153 | return;
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154 | /* glibc 2.1.3 and all earlier libc's have ints as fields
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155 | * of struct shminfo; glibc 2.1.91 has unsigned long; ach */
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156 | printf("max number of segments = %lu\n"
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157 | "max seg size (kbytes) = %lu\n"
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158 | "max total shared memory (pages) = %lu\n"
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159 | "min seg size (bytes) = %lu\n",
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160 | (unsigned long) shminfo.shmmni,
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161 | (unsigned long) (shminfo.shmmax >> 10),
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162 | (unsigned long) shminfo.shmall,
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163 | (unsigned long) shminfo.shmmin);
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164 | return;
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165 |
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166 | case STATUS:
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167 | printf("------ Shared Memory %s --------\n", "Status");
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168 | printf("segments allocated %d\n"
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169 | "pages allocated %ld\n"
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170 | "pages resident %ld\n"
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171 | "pages swapped %ld\n"
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172 | "Swap performance: %ld attempts\t%ld successes\n",
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173 | shm_info.used_ids,
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174 | shm_info.shm_tot,
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175 | shm_info.shm_rss,
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176 | shm_info.shm_swp,
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177 | shm_info.swap_attempts, shm_info.swap_successes);
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178 | return;
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179 |
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180 | case CREATOR:
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181 | printf("------ Shared Memory %s --------\n", "Segment Creators/Owners");
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182 | printf("%-10s %-10s %-10s %-10s %-10s %-10s\n",
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183 | "shmid", "perms", "cuid", "cgid", "uid", "gid");
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184 | break;
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185 |
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186 | case TIME:
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187 | printf("------ Shared Memory %s --------\n", "Attach/Detach/Change Times");
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188 | printf("%-10s %-10s %-20s %-20s %-20s\n",
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189 | "shmid", "owner", "attached", "detached", "changed");
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190 | break;
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191 |
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192 | case PID:
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193 | printf("------ Shared Memory %s --------\n", "Creator/Last-op");
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194 | printf("%-10s %-10s %-10s %-10s\n",
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195 | "shmid", "owner", "cpid", "lpid");
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196 | break;
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197 |
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198 | default:
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199 | printf("------ Shared Memory %s --------\n", "Segments");
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200 | printf("%-10s %-10s %-10s %-10s %-10s %-10s %-12s\n",
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201 | "key", "shmid", "owner", "perms", "bytes", "nattch",
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202 | "status");
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203 | break;
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204 | }
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205 |
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206 | for (id = 0; id <= maxid; id++) {
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207 | shmid = shmctl(id, SHM_STAT, &shmseg);
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208 | if (shmid < 0)
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209 | continue;
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210 | if (format == CREATOR) {
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211 | print_perms(shmid, ipcp);
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212 | continue;
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213 | }
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214 | pw = getpwuid(ipcp->uid);
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215 | switch (format) {
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216 | case TIME:
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217 | if (pw)
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218 | printf("%-10d %-10.10s", shmid, pw->pw_name);
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219 | else
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220 | printf("%-10d %-10d", shmid, ipcp->uid);
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221 | /* ctime uses static buffer: use separate calls */
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222 | printf(" %-20.16s", shmseg.shm_atime
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223 | ? ctime(&shmseg.shm_atime) + 4 : "Not set");
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224 | printf(" %-20.16s", shmseg.shm_dtime
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225 | ? ctime(&shmseg.shm_dtime) + 4 : "Not set");
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226 | printf(" %-20.16s\n", shmseg.shm_ctime
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227 | ? ctime(&shmseg.shm_ctime) + 4 : "Not set");
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228 | break;
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229 | case PID:
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230 | if (pw)
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231 | printf("%-10d %-10.10s", shmid, pw->pw_name);
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232 | else
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233 | printf("%-10d %-10d", shmid, ipcp->uid);
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234 | printf(" %-10d %-10d\n", shmseg.shm_cpid, shmseg.shm_lpid);
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235 | break;
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236 |
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237 | default:
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238 | printf("0x%08x ", ipcp->KEY);
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239 | if (pw)
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240 | printf("%-10d %-10.10s", shmid, pw->pw_name);
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241 | else
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242 | printf("%-10d %-10d", shmid, ipcp->uid);
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243 | printf(" %-10o %-10lu %-10ld %-6s %-6s\n", ipcp->mode & 0777,
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244 | /*
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245 | * earlier: int, Austin has size_t
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246 | */
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247 | (unsigned long) shmseg.shm_segsz,
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248 | /*
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249 | * glibc-2.1.3 and earlier has unsigned short;
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250 | * Austin has shmatt_t
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251 | */
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252 | (long) shmseg.shm_nattch,
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253 | ipcp->mode & SHM_DEST ? "dest" : " ",
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254 | ipcp->mode & SHM_LOCKED ? "locked" : " ");
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255 | break;
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256 | }
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257 | }
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258 | }
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259 |
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260 |
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261 | static NOINLINE void do_sem(void)
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262 | {
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263 | int maxid, semid, id;
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264 | struct semid_ds semary;
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265 | struct seminfo seminfo;
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266 | struct ipc_perm *ipcp = &semary.sem_perm;
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267 | struct passwd *pw;
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268 | union semun arg;
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269 |
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270 | arg.array = (unsigned short *) (void *) &seminfo;
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271 | maxid = semctl(0, 0, SEM_INFO, arg);
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272 | if (maxid < 0) {
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273 | printf("kernel not configured for %s\n", "semaphores");
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274 | return;
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275 | }
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276 |
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277 | switch (format) {
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278 | case LIMITS:
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279 | printf("------ Semaphore %s --------\n", "Limits");
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280 | arg.array = (unsigned short *) (void *) &seminfo; /* damn union */
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281 | if ((semctl(0, 0, IPC_INFO, arg)) < 0)
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282 | return;
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283 | printf("max number of arrays = %d\n"
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284 | "max semaphores per array = %d\n"
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285 | "max semaphores system wide = %d\n"
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286 | "max ops per semop call = %d\n"
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287 | "semaphore max value = %d\n",
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288 | seminfo.semmni,
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289 | seminfo.semmsl,
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290 | seminfo.semmns, seminfo.semopm, seminfo.semvmx);
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291 | return;
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292 |
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293 | case STATUS:
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294 | printf("------ Semaphore %s --------\n", "Status");
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295 | printf("used arrays = %d\n"
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296 | "allocated semaphores = %d\n",
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297 | seminfo.semusz, seminfo.semaem);
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298 | return;
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299 |
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300 | case CREATOR:
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301 | printf("------ Semaphore %s --------\n", "Arrays Creators/Owners");
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302 | printf("%-10s %-10s %-10s %-10s %-10s %-10s\n",
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303 | "semid", "perms", "cuid", "cgid", "uid", "gid");
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304 | break;
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305 |
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306 | case TIME:
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307 | printf("------ Shared Memory %s --------\n", "Operation/Change Times");
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308 | printf("%-8s %-10s %-26.24s %-26.24s\n",
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309 | "shmid", "owner", "last-op", "last-changed");
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310 | break;
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311 |
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312 | case PID:
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313 | break;
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314 |
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315 | default:
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316 | printf("------ Semaphore %s --------\n", "Arrays");
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317 | printf("%-10s %-10s %-10s %-10s %-10s\n",
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318 | "key", "semid", "owner", "perms", "nsems");
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319 | break;
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320 | }
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321 |
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322 | for (id = 0; id <= maxid; id++) {
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323 | arg.buf = (struct semid_ds *) &semary;
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324 | semid = semctl(id, 0, SEM_STAT, arg);
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325 | if (semid < 0)
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326 | continue;
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327 | if (format == CREATOR) {
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328 | print_perms(semid, ipcp);
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329 | continue;
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330 | }
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331 | pw = getpwuid(ipcp->uid);
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332 | switch (format) {
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333 | case TIME:
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334 | if (pw)
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335 | printf("%-8d %-10.10s", semid, pw->pw_name);
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336 | else
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337 | printf("%-8d %-10d", semid, ipcp->uid);
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338 | /* ctime uses static buffer: use separate calls */
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339 | printf(" %-26.24s", semary.sem_otime
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340 | ? ctime(&semary.sem_otime) : "Not set");
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341 | printf(" %-26.24s\n", semary.sem_ctime
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342 | ? ctime(&semary.sem_ctime) : "Not set");
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343 | break;
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344 | case PID:
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345 | break;
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346 |
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347 | default:
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348 | printf("0x%08x ", ipcp->KEY);
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349 | if (pw)
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350 | printf("%-10d %-10.9s", semid, pw->pw_name);
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351 | else
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352 | printf("%-10d %-9d", semid, ipcp->uid);
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353 | printf(" %-10o %-10ld\n", ipcp->mode & 0777,
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354 | /*
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355 | * glibc-2.1.3 and earlier has unsigned short;
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356 | * glibc-2.1.91 has variation between
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357 | * unsigned short and unsigned long
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358 | * Austin prescribes unsigned short.
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359 | */
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360 | (long) semary.sem_nsems);
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361 | break;
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362 | }
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363 | }
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364 | }
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365 |
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366 |
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367 | static NOINLINE void do_msg(void)
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368 | {
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369 | int maxid, msqid, id;
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370 | struct msqid_ds msgque;
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371 | struct msginfo msginfo;
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372 | struct ipc_perm *ipcp = &msgque.msg_perm;
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373 | struct passwd *pw;
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374 |
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375 | maxid = msgctl(0, MSG_INFO, (struct msqid_ds *) (void *) &msginfo);
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376 | if (maxid < 0) {
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377 | printf("kernel not configured for %s\n", "message queues");
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378 | return;
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379 | }
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380 |
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381 | switch (format) {
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382 | case LIMITS:
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383 | if ((msgctl(0, IPC_INFO, (struct msqid_ds *) (void *) &msginfo)) < 0)
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384 | return;
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385 | printf("------ Message%s --------\n", "s: Limits");
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386 | printf("max queues system wide = %d\n"
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387 | "max size of message (bytes) = %d\n"
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388 | "default max size of queue (bytes) = %d\n",
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389 | msginfo.msgmni, msginfo.msgmax, msginfo.msgmnb);
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390 | return;
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391 |
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392 | case STATUS:
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393 | printf("------ Message%s --------\n", "s: Status");
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394 | printf("allocated queues = %d\n"
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395 | "used headers = %d\n"
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396 | "used space = %d bytes\n",
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397 | msginfo.msgpool, msginfo.msgmap, msginfo.msgtql);
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398 | return;
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399 |
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400 | case CREATOR:
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401 | printf("------ Message%s --------\n", " Queues: Creators/Owners");
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402 | printf("%-10s %-10s %-10s %-10s %-10s %-10s\n",
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403 | "msqid", "perms", "cuid", "cgid", "uid", "gid");
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404 | break;
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405 |
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406 | case TIME:
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407 | printf("------ Message%s --------\n", " Queues Send/Recv/Change Times");
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408 | printf("%-8s %-10s %-20s %-20s %-20s\n",
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409 | "msqid", "owner", "send", "recv", "change");
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410 | break;
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411 |
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412 | case PID:
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413 | printf("------ Message%s --------\n", " Queues PIDs");
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414 | printf("%-10s %-10s %-10s %-10s\n",
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415 | "msqid", "owner", "lspid", "lrpid");
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416 | break;
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417 |
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418 | default:
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419 | printf("------ Message%s --------\n", " Queues");
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420 | printf("%-10s %-10s %-10s %-10s %-12s %-12s\n",
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421 | "key", "msqid", "owner", "perms", "used-bytes", "messages");
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422 | break;
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423 | }
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424 |
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425 | for (id = 0; id <= maxid; id++) {
|
---|
426 | msqid = msgctl(id, MSG_STAT, &msgque);
|
---|
427 | if (msqid < 0)
|
---|
428 | continue;
|
---|
429 | if (format == CREATOR) {
|
---|
430 | print_perms(msqid, ipcp);
|
---|
431 | continue;
|
---|
432 | }
|
---|
433 | pw = getpwuid(ipcp->uid);
|
---|
434 | switch (format) {
|
---|
435 | case TIME:
|
---|
436 | if (pw)
|
---|
437 | printf("%-8d %-10.10s", msqid, pw->pw_name);
|
---|
438 | else
|
---|
439 | printf("%-8d %-10d", msqid, ipcp->uid);
|
---|
440 | printf(" %-20.16s", msgque.msg_stime
|
---|
441 | ? ctime(&msgque.msg_stime) + 4 : "Not set");
|
---|
442 | printf(" %-20.16s", msgque.msg_rtime
|
---|
443 | ? ctime(&msgque.msg_rtime) + 4 : "Not set");
|
---|
444 | printf(" %-20.16s\n", msgque.msg_ctime
|
---|
445 | ? ctime(&msgque.msg_ctime) + 4 : "Not set");
|
---|
446 | break;
|
---|
447 | case PID:
|
---|
448 | if (pw)
|
---|
449 | printf("%-8d %-10.10s", msqid, pw->pw_name);
|
---|
450 | else
|
---|
451 | printf("%-8d %-10d", msqid, ipcp->uid);
|
---|
452 | printf(" %5d %5d\n", msgque.msg_lspid, msgque.msg_lrpid);
|
---|
453 | break;
|
---|
454 |
|
---|
455 | default:
|
---|
456 | printf("0x%08x ", ipcp->KEY);
|
---|
457 | if (pw)
|
---|
458 | printf("%-10d %-10.10s", msqid, pw->pw_name);
|
---|
459 | else
|
---|
460 | printf("%-10d %-10d", msqid, ipcp->uid);
|
---|
461 | printf(" %-10o %-12ld %-12ld\n", ipcp->mode & 0777,
|
---|
462 | /*
|
---|
463 | * glibc-2.1.3 and earlier has unsigned short;
|
---|
464 | * glibc-2.1.91 has variation between
|
---|
465 | * unsigned short, unsigned long
|
---|
466 | * Austin has msgqnum_t
|
---|
467 | */
|
---|
468 | (long) msgque.msg_cbytes, (long) msgque.msg_qnum);
|
---|
469 | break;
|
---|
470 | }
|
---|
471 | }
|
---|
472 | }
|
---|
473 |
|
---|
474 |
|
---|
475 | static void print_shm(int shmid)
|
---|
476 | {
|
---|
477 | struct shmid_ds shmds;
|
---|
478 | struct ipc_perm *ipcp = &shmds.shm_perm;
|
---|
479 |
|
---|
480 | if (shmctl(shmid, IPC_STAT, &shmds) == -1) {
|
---|
481 | bb_perror_msg("shmctl");
|
---|
482 | return;
|
---|
483 | }
|
---|
484 |
|
---|
485 | printf("\nShared memory Segment shmid=%d\n"
|
---|
486 | "uid=%d\tgid=%d\tcuid=%d\tcgid=%d\n"
|
---|
487 | "mode=%#o\taccess_perms=%#o\n"
|
---|
488 | "bytes=%ld\tlpid=%d\tcpid=%d\tnattch=%ld\n",
|
---|
489 | shmid,
|
---|
490 | ipcp->uid, ipcp->gid, ipcp->cuid, ipcp->cgid,
|
---|
491 | ipcp->mode, ipcp->mode & 0777,
|
---|
492 | (long) shmds.shm_segsz, shmds.shm_lpid, shmds.shm_cpid,
|
---|
493 | (long) shmds.shm_nattch);
|
---|
494 | printf("att_time=%-26.24s\n",
|
---|
495 | shmds.shm_atime ? ctime(&shmds.shm_atime) : "Not set");
|
---|
496 | printf("det_time=%-26.24s\n",
|
---|
497 | shmds.shm_dtime ? ctime(&shmds.shm_dtime) : "Not set");
|
---|
498 | printf("change_time=%-26.24s\n\n", ctime(&shmds.shm_ctime));
|
---|
499 | }
|
---|
500 |
|
---|
501 |
|
---|
502 | static void print_msg(int msqid)
|
---|
503 | {
|
---|
504 | struct msqid_ds buf;
|
---|
505 | struct ipc_perm *ipcp = &buf.msg_perm;
|
---|
506 |
|
---|
507 | if (msgctl(msqid, IPC_STAT, &buf) == -1) {
|
---|
508 | bb_perror_msg("msgctl");
|
---|
509 | return;
|
---|
510 | }
|
---|
511 |
|
---|
512 | printf("\nMessage Queue msqid=%d\n"
|
---|
513 | "uid=%d\tgid=%d\tcuid=%d\tcgid=%d\tmode=%#o\n"
|
---|
514 | "cbytes=%ld\tqbytes=%ld\tqnum=%ld\tlspid=%d\tlrpid=%d\n",
|
---|
515 | msqid, ipcp->uid, ipcp->gid, ipcp->cuid, ipcp->cgid, ipcp->mode,
|
---|
516 | /*
|
---|
517 | * glibc-2.1.3 and earlier has unsigned short;
|
---|
518 | * glibc-2.1.91 has variation between
|
---|
519 | * unsigned short, unsigned long
|
---|
520 | * Austin has msgqnum_t (for msg_qbytes)
|
---|
521 | */
|
---|
522 | (long) buf.msg_cbytes, (long) buf.msg_qbytes,
|
---|
523 | (long) buf.msg_qnum, buf.msg_lspid, buf.msg_lrpid);
|
---|
524 |
|
---|
525 | printf("send_time=%-26.24s\n",
|
---|
526 | buf.msg_stime ? ctime(&buf.msg_stime) : "Not set");
|
---|
527 | printf("rcv_time=%-26.24s\n",
|
---|
528 | buf.msg_rtime ? ctime(&buf.msg_rtime) : "Not set");
|
---|
529 | printf("change_time=%-26.24s\n\n",
|
---|
530 | buf.msg_ctime ? ctime(&buf.msg_ctime) : "Not set");
|
---|
531 | }
|
---|
532 |
|
---|
533 | static void print_sem(int semid)
|
---|
534 | {
|
---|
535 | struct semid_ds semds;
|
---|
536 | struct ipc_perm *ipcp = &semds.sem_perm;
|
---|
537 | union semun arg;
|
---|
538 | unsigned int i;
|
---|
539 |
|
---|
540 | arg.buf = &semds;
|
---|
541 | if (semctl(semid, 0, IPC_STAT, arg)) {
|
---|
542 | bb_perror_msg("semctl");
|
---|
543 | return;
|
---|
544 | }
|
---|
545 |
|
---|
546 | printf("\nSemaphore Array semid=%d\n"
|
---|
547 | "uid=%d\t gid=%d\t cuid=%d\t cgid=%d\n"
|
---|
548 | "mode=%#o, access_perms=%#o\n"
|
---|
549 | "nsems = %ld\n"
|
---|
550 | "otime = %-26.24s\n",
|
---|
551 | semid,
|
---|
552 | ipcp->uid, ipcp->gid, ipcp->cuid, ipcp->cgid,
|
---|
553 | ipcp->mode, ipcp->mode & 0777,
|
---|
554 | (long) semds.sem_nsems,
|
---|
555 | semds.sem_otime ? ctime(&semds.sem_otime) : "Not set");
|
---|
556 | printf("ctime = %-26.24s\n"
|
---|
557 | "%-10s %-10s %-10s %-10s %-10s\n",
|
---|
558 | ctime(&semds.sem_ctime),
|
---|
559 | "semnum", "value", "ncount", "zcount", "pid");
|
---|
560 |
|
---|
561 | arg.val = 0;
|
---|
562 | for (i = 0; i < semds.sem_nsems; i++) {
|
---|
563 | int val, ncnt, zcnt, pid;
|
---|
564 |
|
---|
565 | val = semctl(semid, i, GETVAL, arg);
|
---|
566 | ncnt = semctl(semid, i, GETNCNT, arg);
|
---|
567 | zcnt = semctl(semid, i, GETZCNT, arg);
|
---|
568 | pid = semctl(semid, i, GETPID, arg);
|
---|
569 | if (val < 0 || ncnt < 0 || zcnt < 0 || pid < 0) {
|
---|
570 | bb_perror_msg_and_die("semctl");
|
---|
571 | }
|
---|
572 | printf("%-10d %-10d %-10d %-10d %-10d\n", i, val, ncnt, zcnt, pid);
|
---|
573 | }
|
---|
574 | bb_putchar('\n');
|
---|
575 | }
|
---|
576 |
|
---|
577 | int ipcs_main(int argc, char **argv) MAIN_EXTERNALLY_VISIBLE;
|
---|
578 | int ipcs_main(int argc UNUSED_PARAM, char **argv)
|
---|
579 | {
|
---|
580 | int id = 0;
|
---|
581 | unsigned flags = 0;
|
---|
582 | unsigned opt;
|
---|
583 | char *opt_i;
|
---|
584 | #define flag_print (1<<0)
|
---|
585 | #define flag_msg (1<<1)
|
---|
586 | #define flag_sem (1<<2)
|
---|
587 | #define flag_shm (1<<3)
|
---|
588 |
|
---|
589 | opt = getopt32(argv, "i:aqsmtcplu", &opt_i);
|
---|
590 | if (opt & 0x1) { // -i
|
---|
591 | id = xatoi(opt_i);
|
---|
592 | flags |= flag_print;
|
---|
593 | }
|
---|
594 | if (opt & 0x2) flags |= flag_msg | flag_sem | flag_shm; // -a
|
---|
595 | if (opt & 0x4) flags |= flag_msg; // -q
|
---|
596 | if (opt & 0x8) flags |= flag_sem; // -s
|
---|
597 | if (opt & 0x10) flags |= flag_shm; // -m
|
---|
598 | if (opt & 0x20) format = TIME; // -t
|
---|
599 | if (opt & 0x40) format = CREATOR; // -c
|
---|
600 | if (opt & 0x80) format = PID; // -p
|
---|
601 | if (opt & 0x100) format = LIMITS; // -l
|
---|
602 | if (opt & 0x200) format = STATUS; // -u
|
---|
603 |
|
---|
604 | if (flags & flag_print) {
|
---|
605 | if (flags & flag_shm) {
|
---|
606 | print_shm(id);
|
---|
607 | fflush_stdout_and_exit(EXIT_SUCCESS);
|
---|
608 | }
|
---|
609 | if (flags & flag_sem) {
|
---|
610 | print_sem(id);
|
---|
611 | fflush_stdout_and_exit(EXIT_SUCCESS);
|
---|
612 | }
|
---|
613 | if (flags & flag_msg) {
|
---|
614 | print_msg(id);
|
---|
615 | fflush_stdout_and_exit(EXIT_SUCCESS);
|
---|
616 | }
|
---|
617 | bb_show_usage();
|
---|
618 | }
|
---|
619 |
|
---|
620 | if (!(flags & (flag_shm | flag_msg | flag_sem)))
|
---|
621 | flags |= flag_msg | flag_shm | flag_sem;
|
---|
622 | bb_putchar('\n');
|
---|
623 |
|
---|
624 | if (flags & flag_shm) {
|
---|
625 | do_shm();
|
---|
626 | bb_putchar('\n');
|
---|
627 | }
|
---|
628 | if (flags & flag_sem) {
|
---|
629 | do_sem();
|
---|
630 | bb_putchar('\n');
|
---|
631 | }
|
---|
632 | if (flags & flag_msg) {
|
---|
633 | do_msg();
|
---|
634 | bb_putchar('\n');
|
---|
635 | }
|
---|
636 | fflush_stdout_and_exit(EXIT_SUCCESS);
|
---|
637 | }
|
---|