[3320] | 1 | /* vi: set sw=4 ts=4: */
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| 2 | /*
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| 3 | * Mini ps implementation(s) for busybox
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| 4 | *
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| 5 | * Copyright (C) 1999-2004 by Erik Andersen <andersen@codepoet.org>
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| 6 | * Fix for SELinux Support:(c)2007 Hiroshi Shinji <shiroshi@my.email.ne.jp>
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| 7 | * (c)2007 Yuichi Nakamura <ynakam@hitachisoft.jp>
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| 8 | *
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| 9 | * Licensed under GPLv2, see file LICENSE in this source tree.
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| 10 | */
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| 11 |
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| 12 | #include "libbb.h"
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| 13 |
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| 14 | /* Absolute maximum on output line length */
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| 15 | enum { MAX_WIDTH = 2*1024 };
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| 16 |
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| 17 | #if ENABLE_DESKTOP
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| 18 |
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| 19 | #include <sys/times.h> /* for times() */
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| 20 | #ifndef AT_CLKTCK
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| 21 | #define AT_CLKTCK 17
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| 22 | #endif
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| 23 |
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| 24 |
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| 25 | #if ENABLE_SELINUX
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| 26 | #define SELINUX_O_PREFIX "label,"
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| 27 | #define DEFAULT_O_STR (SELINUX_O_PREFIX "pid,user" IF_FEATURE_PS_TIME(",time") ",args")
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| 28 | #else
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| 29 | #define DEFAULT_O_STR ("pid,user" IF_FEATURE_PS_TIME(",time") ",args")
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| 30 | #endif
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| 31 |
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| 32 | typedef struct {
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| 33 | uint16_t width;
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| 34 | char name6[6];
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| 35 | const char *header;
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| 36 | void (*f)(char *buf, int size, const procps_status_t *ps);
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| 37 | int ps_flags;
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| 38 | } ps_out_t;
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| 39 |
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| 40 | struct globals {
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| 41 | ps_out_t* out;
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| 42 | int out_cnt;
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| 43 | int print_header;
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| 44 | int need_flags;
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| 45 | char *buffer;
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| 46 | unsigned terminal_width;
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| 47 | #if ENABLE_FEATURE_PS_TIME
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| 48 | unsigned kernel_HZ;
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| 49 | unsigned long long seconds_since_boot;
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| 50 | #endif
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| 51 | char default_o[sizeof(DEFAULT_O_STR)];
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| 52 | } FIX_ALIASING;
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| 53 | #define G (*(struct globals*)&bb_common_bufsiz1)
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| 54 | #define out (G.out )
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| 55 | #define out_cnt (G.out_cnt )
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| 56 | #define print_header (G.print_header )
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| 57 | #define need_flags (G.need_flags )
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| 58 | #define buffer (G.buffer )
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| 59 | #define terminal_width (G.terminal_width )
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| 60 | #define kernel_HZ (G.kernel_HZ )
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| 61 | #define seconds_since_boot (G.seconds_since_boot)
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| 62 | #define default_o (G.default_o )
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| 63 | #define INIT_G() do { } while (0)
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| 64 |
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| 65 | #if ENABLE_FEATURE_PS_TIME
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| 66 | /* for ELF executables, notes are pushed before environment and args */
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| 67 | static ptrdiff_t find_elf_note(ptrdiff_t findme)
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| 68 | {
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| 69 | ptrdiff_t *ep = (ptrdiff_t *) environ;
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| 70 |
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| 71 | while (*ep++);
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| 72 | while (*ep) {
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| 73 | if (ep[0] == findme) {
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| 74 | return ep[1];
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| 75 | }
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| 76 | ep += 2;
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| 77 | }
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| 78 | return -1;
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| 79 | }
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| 80 |
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| 81 | #if ENABLE_FEATURE_PS_UNUSUAL_SYSTEMS
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| 82 | static unsigned get_HZ_by_waiting(void)
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| 83 | {
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| 84 | struct timeval tv1, tv2;
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| 85 | unsigned t1, t2, r, hz;
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| 86 | unsigned cnt = cnt; /* for compiler */
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| 87 | int diff;
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| 88 |
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| 89 | r = 0;
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| 90 |
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| 91 | /* Wait for times() to reach new tick */
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| 92 | t1 = times(NULL);
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| 93 | do {
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| 94 | t2 = times(NULL);
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| 95 | } while (t2 == t1);
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| 96 | gettimeofday(&tv2, NULL);
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| 97 |
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| 98 | do {
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| 99 | t1 = t2;
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| 100 | tv1.tv_usec = tv2.tv_usec;
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| 101 |
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| 102 | /* Wait exactly one times() tick */
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| 103 | do {
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| 104 | t2 = times(NULL);
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| 105 | } while (t2 == t1);
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| 106 | gettimeofday(&tv2, NULL);
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| 107 |
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| 108 | /* Calculate ticks per sec, rounding up to even */
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| 109 | diff = tv2.tv_usec - tv1.tv_usec;
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| 110 | if (diff <= 0) diff += 1000000;
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| 111 | hz = 1000000u / (unsigned)diff;
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| 112 | hz = (hz+1) & ~1;
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| 113 |
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| 114 | /* Count how many same hz values we saw */
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| 115 | if (r != hz) {
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| 116 | r = hz;
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| 117 | cnt = 0;
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| 118 | }
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| 119 | cnt++;
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| 120 | } while (cnt < 3); /* exit if saw 3 same values */
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| 121 |
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| 122 | return r;
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| 123 | }
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| 124 | #else
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| 125 | static inline unsigned get_HZ_by_waiting(void)
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| 126 | {
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| 127 | /* Better method? */
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| 128 | return 100;
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| 129 | }
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| 130 | #endif
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| 131 |
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| 132 | static unsigned get_kernel_HZ(void)
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| 133 | {
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| 134 | //char buf[64];
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| 135 | struct sysinfo info;
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| 136 |
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| 137 | if (kernel_HZ)
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| 138 | return kernel_HZ;
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| 139 |
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| 140 | /* Works for ELF only, Linux 2.4.0+ */
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| 141 | kernel_HZ = find_elf_note(AT_CLKTCK);
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| 142 | if (kernel_HZ == (unsigned)-1)
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| 143 | kernel_HZ = get_HZ_by_waiting();
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| 144 |
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| 145 | //if (open_read_close("/proc/uptime", buf, sizeof(buf)) <= 0)
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| 146 | // bb_perror_msg_and_die("can't read %s", "/proc/uptime");
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| 147 | //buf[sizeof(buf)-1] = '\0';
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| 148 | ///sscanf(buf, "%llu", &seconds_since_boot);
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| 149 | sysinfo(&info);
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| 150 | seconds_since_boot = info.uptime;
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| 151 |
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| 152 | return kernel_HZ;
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| 153 | }
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| 154 | #endif
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| 155 |
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| 156 | /* Print value to buf, max size+1 chars (including trailing '\0') */
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| 157 |
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| 158 | static void func_user(char *buf, int size, const procps_status_t *ps)
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| 159 | {
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| 160 | #if 1
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| 161 | safe_strncpy(buf, get_cached_username(ps->uid), size+1);
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| 162 | #else
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| 163 | /* "compatible" version, but it's larger */
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| 164 | /* procps 2.18 shows numeric UID if name overflows the field */
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| 165 | /* TODO: get_cached_username() returns numeric string if
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| 166 | * user has no passwd record, we will display it
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| 167 | * left-justified here; too long usernames are shown
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| 168 | * as _right-justified_ IDs. Is it worth fixing? */
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| 169 | const char *user = get_cached_username(ps->uid);
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| 170 | if (strlen(user) <= size)
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| 171 | safe_strncpy(buf, user, size+1);
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| 172 | else
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| 173 | sprintf(buf, "%*u", size, (unsigned)ps->uid);
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| 174 | #endif
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| 175 | }
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| 176 |
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| 177 | static void func_group(char *buf, int size, const procps_status_t *ps)
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| 178 | {
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| 179 | safe_strncpy(buf, get_cached_groupname(ps->gid), size+1);
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| 180 | }
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| 181 |
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| 182 | static void func_comm(char *buf, int size, const procps_status_t *ps)
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| 183 | {
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| 184 | safe_strncpy(buf, ps->comm, size+1);
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| 185 | }
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| 186 |
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| 187 | static void func_args(char *buf, int size, const procps_status_t *ps)
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| 188 | {
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| 189 | read_cmdline(buf, size+1, ps->pid, ps->comm);
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| 190 | }
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| 191 |
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| 192 | static void func_pid(char *buf, int size, const procps_status_t *ps)
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| 193 | {
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| 194 | sprintf(buf, "%*u", size, ps->pid);
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| 195 | }
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| 196 |
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| 197 | static void func_ppid(char *buf, int size, const procps_status_t *ps)
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| 198 | {
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| 199 | sprintf(buf, "%*u", size, ps->ppid);
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| 200 | }
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| 201 |
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| 202 | static void func_pgid(char *buf, int size, const procps_status_t *ps)
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| 203 | {
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| 204 | sprintf(buf, "%*u", size, ps->pgid);
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| 205 | }
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| 206 |
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| 207 | static void put_lu(char *buf, int size, unsigned long u)
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| 208 | {
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| 209 | char buf4[5];
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| 210 |
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| 211 | /* see http://en.wikipedia.org/wiki/Tera */
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| 212 | smart_ulltoa4(u, buf4, " mgtpezy");
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| 213 | buf4[4] = '\0';
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| 214 | sprintf(buf, "%.*s", size, buf4);
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| 215 | }
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| 216 |
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| 217 | static void func_vsz(char *buf, int size, const procps_status_t *ps)
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| 218 | {
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| 219 | put_lu(buf, size, ps->vsz);
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| 220 | }
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| 221 |
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| 222 | static void func_rss(char *buf, int size, const procps_status_t *ps)
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| 223 | {
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| 224 | put_lu(buf, size, ps->rss);
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| 225 | }
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| 226 |
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| 227 | static void func_tty(char *buf, int size, const procps_status_t *ps)
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| 228 | {
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| 229 | buf[0] = '?';
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| 230 | buf[1] = '\0';
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| 231 | if (ps->tty_major) /* tty field of "0" means "no tty" */
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| 232 | snprintf(buf, size+1, "%u,%u", ps->tty_major, ps->tty_minor);
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| 233 | }
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| 234 |
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| 235 | #if ENABLE_FEATURE_PS_ADDITIONAL_COLUMNS
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| 236 |
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| 237 | static void func_rgroup(char *buf, int size, const procps_status_t *ps)
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| 238 | {
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| 239 | safe_strncpy(buf, get_cached_groupname(ps->rgid), size+1);
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| 240 | }
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| 241 |
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| 242 | static void func_ruser(char *buf, int size, const procps_status_t *ps)
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| 243 | {
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| 244 | safe_strncpy(buf, get_cached_username(ps->ruid), size+1);
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| 245 | }
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| 246 |
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| 247 | static void func_nice(char *buf, int size, const procps_status_t *ps)
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| 248 | {
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| 249 | sprintf(buf, "%*d", size, ps->niceness);
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| 250 | }
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| 251 |
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| 252 | #endif
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| 253 |
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| 254 | #if ENABLE_FEATURE_PS_TIME
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| 255 |
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| 256 | static void func_etime(char *buf, int size, const procps_status_t *ps)
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| 257 | {
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| 258 | /* elapsed time [[dd-]hh:]mm:ss; here only mm:ss */
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| 259 | unsigned long mm;
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| 260 | unsigned ss;
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| 261 |
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| 262 | mm = ps->start_time / get_kernel_HZ();
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| 263 | /* must be after get_kernel_HZ()! */
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| 264 | mm = seconds_since_boot - mm;
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| 265 | ss = mm % 60;
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| 266 | mm /= 60;
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| 267 | snprintf(buf, size+1, "%3lu:%02u", mm, ss);
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| 268 | }
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| 269 |
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| 270 | static void func_time(char *buf, int size, const procps_status_t *ps)
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| 271 | {
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| 272 | /* cumulative time [[dd-]hh:]mm:ss; here only mm:ss */
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| 273 | unsigned long mm;
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| 274 | unsigned ss;
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| 275 |
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| 276 | mm = (ps->utime + ps->stime) / get_kernel_HZ();
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| 277 | ss = mm % 60;
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| 278 | mm /= 60;
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| 279 | snprintf(buf, size+1, "%3lu:%02u", mm, ss);
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| 280 | }
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| 281 |
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| 282 | #endif
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| 283 |
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| 284 | #if ENABLE_SELINUX
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| 285 | static void func_label(char *buf, int size, const procps_status_t *ps)
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| 286 | {
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| 287 | safe_strncpy(buf, ps->context ? ps->context : "unknown", size+1);
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| 288 | }
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| 289 | #endif
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| 290 |
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| 291 | /*
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| 292 | static void func_nice(char *buf, int size, const procps_status_t *ps)
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| 293 | {
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| 294 | ps->???
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| 295 | }
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| 296 |
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| 297 | static void func_pcpu(char *buf, int size, const procps_status_t *ps)
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| 298 | {
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| 299 | }
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| 300 | */
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| 301 |
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| 302 | static const ps_out_t out_spec[] = {
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| 303 | // Mandated by POSIX:
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| 304 | { 8 , "user" ,"USER" ,func_user ,PSSCAN_UIDGID },
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| 305 | { 8 , "group" ,"GROUP" ,func_group ,PSSCAN_UIDGID },
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| 306 | { 16 , "comm" ,"COMMAND",func_comm ,PSSCAN_COMM },
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| 307 | { MAX_WIDTH , "args" ,"COMMAND",func_args ,PSSCAN_COMM },
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| 308 | { 5 , "pid" ,"PID" ,func_pid ,PSSCAN_PID },
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| 309 | { 5 , "ppid" ,"PPID" ,func_ppid ,PSSCAN_PPID },
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| 310 | { 5 , "pgid" ,"PGID" ,func_pgid ,PSSCAN_PGID },
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| 311 | #if ENABLE_FEATURE_PS_TIME
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| 312 | { sizeof("ELAPSED")-1, "etime" ,"ELAPSED",func_etime ,PSSCAN_START_TIME },
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| 313 | #endif
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| 314 | #if ENABLE_FEATURE_PS_ADDITIONAL_COLUMNS
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| 315 | { 5 , "nice" ,"NI" ,func_nice ,PSSCAN_NICE },
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| 316 | { 8 , "rgroup","RGROUP" ,func_rgroup,PSSCAN_RUIDGID },
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| 317 | { 8 , "ruser" ,"RUSER" ,func_ruser ,PSSCAN_RUIDGID },
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| 318 | // { 5 , "pcpu" ,"%CPU" ,func_pcpu ,PSSCAN_ },
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| 319 | #endif
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| 320 | #if ENABLE_FEATURE_PS_TIME
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| 321 | { 6 , "time" ,"TIME" ,func_time ,PSSCAN_STIME | PSSCAN_UTIME },
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| 322 | #endif
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| 323 | { 6 , "tty" ,"TT" ,func_tty ,PSSCAN_TTY },
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| 324 | { 4 , "vsz" ,"VSZ" ,func_vsz ,PSSCAN_VSZ },
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| 325 | // Not mandated by POSIX, but useful:
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| 326 | { 4 , "rss" ,"RSS" ,func_rss ,PSSCAN_RSS },
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| 327 | #if ENABLE_SELINUX
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| 328 | { 35 , "label" ,"LABEL" ,func_label ,PSSCAN_CONTEXT },
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| 329 | #endif
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| 330 | };
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| 331 |
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| 332 | static ps_out_t* new_out_t(void)
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| 333 | {
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| 334 | out = xrealloc_vector(out, 2, out_cnt);
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| 335 | return &out[out_cnt++];
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| 336 | }
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| 337 |
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| 338 | static const ps_out_t* find_out_spec(const char *name)
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| 339 | {
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| 340 | unsigned i;
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| 341 | char buf[ARRAY_SIZE(out_spec)*7 + 1];
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| 342 | char *p = buf;
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| 343 |
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| 344 | for (i = 0; i < ARRAY_SIZE(out_spec); i++) {
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| 345 | if (strncmp(name, out_spec[i].name6, 6) == 0)
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| 346 | return &out_spec[i];
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| 347 | p += sprintf(p, "%.6s,", out_spec[i].name6);
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| 348 | }
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| 349 | p[-1] = '\0';
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| 350 | bb_error_msg_and_die("bad -o argument '%s', supported arguments: %s", name, buf);
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| 351 | }
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| 352 |
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| 353 | static void parse_o(char* opt)
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| 354 | {
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| 355 | ps_out_t* new;
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| 356 | // POSIX: "-o is blank- or comma-separated list" (FIXME)
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| 357 | char *comma, *equal;
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| 358 | while (1) {
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| 359 | comma = strchr(opt, ',');
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| 360 | equal = strchr(opt, '=');
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| 361 | if (comma && (!equal || equal > comma)) {
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| 362 | *comma = '\0';
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| 363 | *new_out_t() = *find_out_spec(opt);
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| 364 | *comma = ',';
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| 365 | opt = comma + 1;
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| 366 | continue;
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| 367 | }
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| 368 | break;
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| 369 | }
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| 370 | // opt points to last spec in comma separated list.
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| 371 | // This one can have =HEADER part.
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| 372 | new = new_out_t();
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| 373 | if (equal)
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| 374 | *equal = '\0';
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| 375 | *new = *find_out_spec(opt);
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| 376 | if (equal) {
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| 377 | *equal = '=';
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| 378 | new->header = equal + 1;
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| 379 | // POSIX: the field widths shall be ... at least as wide as
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| 380 | // the header text (default or overridden value).
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| 381 | // If the header text is null, such as -o user=,
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| 382 | // the field width shall be at least as wide as the
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| 383 | // default header text
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| 384 | if (new->header[0]) {
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| 385 | new->width = strlen(new->header);
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| 386 | print_header = 1;
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| 387 | }
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| 388 | } else
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| 389 | print_header = 1;
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| 390 | }
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| 391 |
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| 392 | static void alloc_line_buffer(void)
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| 393 | {
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| 394 | int i;
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| 395 | int width = 0;
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| 396 | for (i = 0; i < out_cnt; i++) {
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| 397 | need_flags |= out[i].ps_flags;
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| 398 | if (out[i].header[0]) {
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| 399 | print_header = 1;
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| 400 | }
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| 401 | width += out[i].width + 1; /* "FIELD " */
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| 402 | if ((int)(width - terminal_width) > 0) {
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| 403 | /* The rest does not fit on the screen */
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| 404 | //out[i].width -= (width - terminal_width - 1);
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| 405 | out_cnt = i + 1;
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| 406 | break;
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| 407 | }
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| 408 | }
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| 409 | #if ENABLE_SELINUX
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| 410 | if (!is_selinux_enabled())
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| 411 | need_flags &= ~PSSCAN_CONTEXT;
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| 412 | #endif
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| 413 | buffer = xmalloc(width + 1); /* for trailing \0 */
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| 414 | }
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| 415 |
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| 416 | static void format_header(void)
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| 417 | {
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| 418 | int i;
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| 419 | ps_out_t* op;
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| 420 | char *p;
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| 421 |
|
---|
| 422 | if (!print_header)
|
---|
| 423 | return;
|
---|
| 424 | p = buffer;
|
---|
| 425 | i = 0;
|
---|
| 426 | if (out_cnt) {
|
---|
| 427 | while (1) {
|
---|
| 428 | op = &out[i];
|
---|
| 429 | if (++i == out_cnt) /* do not pad last field */
|
---|
| 430 | break;
|
---|
| 431 | p += sprintf(p, "%-*s ", op->width, op->header);
|
---|
| 432 | }
|
---|
| 433 | strcpy(p, op->header);
|
---|
| 434 | }
|
---|
| 435 | printf("%.*s\n", terminal_width, buffer);
|
---|
| 436 | }
|
---|
| 437 |
|
---|
| 438 | static void format_process(const procps_status_t *ps)
|
---|
| 439 | {
|
---|
| 440 | int i, len;
|
---|
| 441 | char *p = buffer;
|
---|
| 442 | i = 0;
|
---|
| 443 | if (out_cnt) while (1) {
|
---|
| 444 | out[i].f(p, out[i].width, ps);
|
---|
| 445 | // POSIX: Any field need not be meaningful in all
|
---|
| 446 | // implementations. In such a case a hyphen ( '-' )
|
---|
| 447 | // should be output in place of the field value.
|
---|
| 448 | if (!p[0]) {
|
---|
| 449 | p[0] = '-';
|
---|
| 450 | p[1] = '\0';
|
---|
| 451 | }
|
---|
| 452 | len = strlen(p);
|
---|
| 453 | p += len;
|
---|
| 454 | len = out[i].width - len + 1;
|
---|
| 455 | if (++i == out_cnt) /* do not pad last field */
|
---|
| 456 | break;
|
---|
| 457 | p += sprintf(p, "%*s", len, "");
|
---|
| 458 | }
|
---|
| 459 | printf("%.*s\n", terminal_width, buffer);
|
---|
| 460 | }
|
---|
| 461 |
|
---|
| 462 | int ps_main(int argc, char **argv) MAIN_EXTERNALLY_VISIBLE;
|
---|
| 463 | int ps_main(int argc UNUSED_PARAM, char **argv)
|
---|
| 464 | {
|
---|
| 465 | procps_status_t *p;
|
---|
| 466 | llist_t* opt_o = NULL;
|
---|
| 467 | int opt;
|
---|
| 468 | enum {
|
---|
| 469 | OPT_Z = (1 << 0),
|
---|
| 470 | OPT_o = (1 << 1),
|
---|
| 471 | OPT_a = (1 << 2),
|
---|
| 472 | OPT_A = (1 << 3),
|
---|
| 473 | OPT_d = (1 << 4),
|
---|
| 474 | OPT_e = (1 << 5),
|
---|
| 475 | OPT_f = (1 << 6),
|
---|
| 476 | OPT_l = (1 << 7),
|
---|
| 477 | OPT_T = (1 << 8) * ENABLE_FEATURE_SHOW_THREADS,
|
---|
| 478 | };
|
---|
| 479 |
|
---|
| 480 | INIT_G();
|
---|
| 481 |
|
---|
| 482 | // POSIX:
|
---|
| 483 | // -a Write information for all processes associated with terminals
|
---|
| 484 | // Implementations may omit session leaders from this list
|
---|
| 485 | // -A Write information for all processes
|
---|
| 486 | // -d Write information for all processes, except session leaders
|
---|
| 487 | // -e Write information for all processes (equivalent to -A)
|
---|
| 488 | // -f Generate a full listing
|
---|
| 489 | // -l Generate a long listing
|
---|
| 490 | // -o col1,col2,col3=header
|
---|
| 491 | // Select which columns to display
|
---|
| 492 | /* We allow (and ignore) most of the above. FIXME.
|
---|
| 493 | * -T is picked for threads (POSIX hasn't it standardized).
|
---|
| 494 | * procps v3.2.7 supports -T and shows tids as SPID column,
|
---|
| 495 | * it also supports -L where it shows tids as LWP column.
|
---|
| 496 | */
|
---|
| 497 | opt_complementary = "o::";
|
---|
| 498 | opt = getopt32(argv, "Zo:aAdefl"IF_FEATURE_SHOW_THREADS("T"), &opt_o);
|
---|
| 499 | if (opt_o) {
|
---|
| 500 | do {
|
---|
| 501 | parse_o(llist_pop(&opt_o));
|
---|
| 502 | } while (opt_o);
|
---|
| 503 | } else {
|
---|
| 504 | /* Below: parse_o() needs char*, NOT const char*... */
|
---|
| 505 | #if ENABLE_SELINUX
|
---|
| 506 | if (!(opt & OPT_Z) || !is_selinux_enabled()) {
|
---|
| 507 | /* no -Z or no SELinux: do not show LABEL */
|
---|
| 508 | strcpy(default_o, DEFAULT_O_STR + sizeof(SELINUX_O_PREFIX)-1);
|
---|
| 509 | } else
|
---|
| 510 | #endif
|
---|
| 511 | {
|
---|
| 512 | strcpy(default_o, DEFAULT_O_STR);
|
---|
| 513 | }
|
---|
| 514 | parse_o(default_o);
|
---|
| 515 | }
|
---|
| 516 | #if ENABLE_FEATURE_SHOW_THREADS
|
---|
| 517 | if (opt & OPT_T)
|
---|
| 518 | need_flags |= PSSCAN_TASKS;
|
---|
| 519 | #endif
|
---|
| 520 |
|
---|
| 521 | /* Was INT_MAX, but some libc's go belly up with printf("%.*s")
|
---|
| 522 | * and such large widths */
|
---|
| 523 | terminal_width = MAX_WIDTH;
|
---|
| 524 | if (isatty(1)) {
|
---|
| 525 | get_terminal_width_height(0, &terminal_width, NULL);
|
---|
| 526 | if (--terminal_width > MAX_WIDTH)
|
---|
| 527 | terminal_width = MAX_WIDTH;
|
---|
| 528 | }
|
---|
| 529 | alloc_line_buffer();
|
---|
| 530 | format_header();
|
---|
| 531 |
|
---|
| 532 | p = NULL;
|
---|
| 533 | while ((p = procps_scan(p, need_flags)) != NULL) {
|
---|
| 534 | format_process(p);
|
---|
| 535 | }
|
---|
| 536 |
|
---|
| 537 | return EXIT_SUCCESS;
|
---|
| 538 | }
|
---|
| 539 |
|
---|
| 540 |
|
---|
| 541 | #else /* !ENABLE_DESKTOP */
|
---|
| 542 |
|
---|
| 543 |
|
---|
| 544 | int ps_main(int argc, char **argv) MAIN_EXTERNALLY_VISIBLE;
|
---|
| 545 | int ps_main(int argc UNUSED_PARAM, char **argv UNUSED_PARAM)
|
---|
| 546 | {
|
---|
| 547 | procps_status_t *p;
|
---|
| 548 | int psscan_flags = PSSCAN_PID | PSSCAN_UIDGID
|
---|
| 549 | | PSSCAN_STATE | PSSCAN_VSZ | PSSCAN_COMM;
|
---|
| 550 | unsigned terminal_width IF_NOT_FEATURE_PS_WIDE(= 79);
|
---|
| 551 | enum {
|
---|
| 552 | OPT_Z = (1 << 0) * ENABLE_SELINUX,
|
---|
| 553 | OPT_T = (1 << ENABLE_SELINUX) * ENABLE_FEATURE_SHOW_THREADS,
|
---|
| 554 | };
|
---|
| 555 | int opts = 0;
|
---|
| 556 | /* If we support any options, parse argv */
|
---|
| 557 | #if ENABLE_SELINUX || ENABLE_FEATURE_SHOW_THREADS || ENABLE_FEATURE_PS_WIDE
|
---|
| 558 | # if ENABLE_FEATURE_PS_WIDE
|
---|
| 559 | /* -w is a bit complicated */
|
---|
| 560 | int w_count = 0;
|
---|
| 561 | opt_complementary = "-:ww";
|
---|
| 562 | opts = getopt32(argv, IF_SELINUX("Z")IF_FEATURE_SHOW_THREADS("T")"w", &w_count);
|
---|
| 563 | /* if w is given once, GNU ps sets the width to 132,
|
---|
| 564 | * if w is given more than once, it is "unlimited"
|
---|
| 565 | */
|
---|
| 566 | if (w_count) {
|
---|
| 567 | terminal_width = (w_count == 1) ? 132 : MAX_WIDTH;
|
---|
| 568 | } else {
|
---|
| 569 | get_terminal_width_height(0, &terminal_width, NULL);
|
---|
| 570 | /* Go one less... */
|
---|
| 571 | if (--terminal_width > MAX_WIDTH)
|
---|
| 572 | terminal_width = MAX_WIDTH;
|
---|
| 573 | }
|
---|
| 574 | # else
|
---|
| 575 | /* -w is not supported, only -Z and/or -T */
|
---|
| 576 | opt_complementary = "-";
|
---|
| 577 | opts = getopt32(argv, IF_SELINUX("Z")IF_FEATURE_SHOW_THREADS("T"));
|
---|
| 578 | # endif
|
---|
| 579 | #endif
|
---|
| 580 |
|
---|
| 581 | #if ENABLE_SELINUX
|
---|
| 582 | if ((opts & OPT_Z) && is_selinux_enabled()) {
|
---|
| 583 | psscan_flags = PSSCAN_PID | PSSCAN_CONTEXT
|
---|
| 584 | | PSSCAN_STATE | PSSCAN_COMM;
|
---|
| 585 | puts(" PID CONTEXT STAT COMMAND");
|
---|
| 586 | } else
|
---|
| 587 | #endif
|
---|
| 588 | {
|
---|
| 589 | puts(" PID USER VSZ STAT COMMAND");
|
---|
| 590 | }
|
---|
| 591 | if (opts & OPT_T) {
|
---|
| 592 | psscan_flags |= PSSCAN_TASKS;
|
---|
| 593 | }
|
---|
| 594 |
|
---|
| 595 | p = NULL;
|
---|
| 596 | while ((p = procps_scan(p, psscan_flags)) != NULL) {
|
---|
| 597 | int len;
|
---|
| 598 | #if ENABLE_SELINUX
|
---|
| 599 | if (psscan_flags & PSSCAN_CONTEXT) {
|
---|
| 600 | len = printf("%5u %-32.32s %s ",
|
---|
| 601 | p->pid,
|
---|
| 602 | p->context ? p->context : "unknown",
|
---|
| 603 | p->state);
|
---|
| 604 | } else
|
---|
| 605 | #endif
|
---|
| 606 | {
|
---|
| 607 | const char *user = get_cached_username(p->uid);
|
---|
| 608 | //if (p->vsz == 0)
|
---|
| 609 | // len = printf("%5u %-8.8s %s ",
|
---|
| 610 | // p->pid, user, p->state);
|
---|
| 611 | //else
|
---|
| 612 | {
|
---|
| 613 | char buf6[6];
|
---|
| 614 | smart_ulltoa5(p->vsz, buf6, " mgtpezy");
|
---|
| 615 | buf6[5] = '\0';
|
---|
| 616 | len = printf("%5u %-8.8s %s %s ",
|
---|
| 617 | p->pid, user, buf6, p->state);
|
---|
| 618 | }
|
---|
| 619 | }
|
---|
| 620 |
|
---|
| 621 | {
|
---|
| 622 | int sz = terminal_width - len;
|
---|
| 623 | char buf[sz + 1];
|
---|
| 624 | read_cmdline(buf, sz, p->pid, p->comm);
|
---|
| 625 | puts(buf);
|
---|
| 626 | }
|
---|
| 627 | }
|
---|
| 628 | if (ENABLE_FEATURE_CLEAN_UP)
|
---|
| 629 | clear_username_cache();
|
---|
| 630 | return EXIT_SUCCESS;
|
---|
| 631 | }
|
---|
| 632 |
|
---|
| 633 | #endif /* !ENABLE_DESKTOP */
|
---|