Eric Andersen | 44608e9 | 2002-10-22 12:21:15 +0000 | [diff] [blame] | 1 | /* vi: set sw=4 ts=4: */ |
| 2 | /* |
| 3 | * Utility routines. |
| 4 | * |
| 5 | * Copyright 1998 by Albert Cahalan; all rights reserved. |
| 6 | * Copyright (C) 2002 by Vladimir Oleynik <dzo@simtreas.ru> |
Denis Vlasenko | 0696b8a | 2007-06-06 07:40:16 +0000 | [diff] [blame] | 7 | * SELinux support: (c) 2007 by Yuichi Nakamura <ynakam@hitachisoft.jp> |
Denis Vlasenko | 49a128a | 2007-07-17 21:42:59 +0000 | [diff] [blame] | 8 | * |
Bernhard Reutner-Fischer | b1629b1 | 2006-05-19 19:29:19 +0000 | [diff] [blame] | 9 | * Licensed under GPLv2 or later, see file LICENSE in this tarball for details. |
Eric Andersen | 44608e9 | 2002-10-22 12:21:15 +0000 | [diff] [blame] | 10 | */ |
| 11 | |
Glenn L McGrath | 7b1eca2 | 2002-11-24 01:32:56 +0000 | [diff] [blame] | 12 | #include "libbb.h" |
Eric Andersen | 44608e9 | 2002-10-22 12:21:15 +0000 | [diff] [blame] | 13 | |
Rob Landley | b280455 | 2006-02-13 22:04:27 +0000 | [diff] [blame] | 14 | |
Denis Vlasenko | c50f370 | 2006-11-24 14:57:31 +0000 | [diff] [blame] | 15 | typedef struct unsigned_to_name_map_t { |
| 16 | unsigned id; |
Denis Vlasenko | 2405ad6 | 2007-01-19 21:24:17 +0000 | [diff] [blame] | 17 | char name[USERNAME_MAX_SIZE]; |
Denis Vlasenko | c50f370 | 2006-11-24 14:57:31 +0000 | [diff] [blame] | 18 | } unsigned_to_name_map_t; |
Denis Vlasenko | 459e4d6 | 2006-11-05 00:43:51 +0000 | [diff] [blame] | 19 | |
Denis Vlasenko | c50f370 | 2006-11-24 14:57:31 +0000 | [diff] [blame] | 20 | typedef struct cache_t { |
| 21 | unsigned_to_name_map_t *cache; |
| 22 | int size; |
| 23 | } cache_t; |
Denis Vlasenko | 459e4d6 | 2006-11-05 00:43:51 +0000 | [diff] [blame] | 24 | |
Denis Vlasenko | c50f370 | 2006-11-24 14:57:31 +0000 | [diff] [blame] | 25 | static cache_t username, groupname; |
| 26 | |
| 27 | static void clear_cache(cache_t *cp) |
| 28 | { |
| 29 | free(cp->cache); |
| 30 | cp->cache = NULL; |
| 31 | cp->size = 0; |
| 32 | } |
Denis Vlasenko | 459e4d6 | 2006-11-05 00:43:51 +0000 | [diff] [blame] | 33 | void clear_username_cache(void) |
| 34 | { |
Denis Vlasenko | c50f370 | 2006-11-24 14:57:31 +0000 | [diff] [blame] | 35 | clear_cache(&username); |
| 36 | clear_cache(&groupname); |
Denis Vlasenko | 459e4d6 | 2006-11-05 00:43:51 +0000 | [diff] [blame] | 37 | } |
| 38 | |
Denis Vlasenko | b8a8e60 | 2006-11-24 14:59:45 +0000 | [diff] [blame] | 39 | #if 0 /* more generic, but we don't need that yet */ |
Denis Vlasenko | c50f370 | 2006-11-24 14:57:31 +0000 | [diff] [blame] | 40 | /* Returns -N-1 if not found. */ |
| 41 | /* cp->cache[N] is allocated and must be filled in this case */ |
| 42 | static int get_cached(cache_t *cp, unsigned id) |
Denis Vlasenko | 459e4d6 | 2006-11-05 00:43:51 +0000 | [diff] [blame] | 43 | { |
| 44 | int i; |
Denis Vlasenko | c50f370 | 2006-11-24 14:57:31 +0000 | [diff] [blame] | 45 | for (i = 0; i < cp->size; i++) |
| 46 | if (cp->cache[i].id == id) |
| 47 | return i; |
| 48 | i = cp->size++; |
| 49 | cp->cache = xrealloc(cp->cache, cp->size * sizeof(*cp->cache)); |
| 50 | cp->cache[i++].id = id; |
| 51 | return -i; |
| 52 | } |
Denis Vlasenko | b8a8e60 | 2006-11-24 14:59:45 +0000 | [diff] [blame] | 53 | #endif |
| 54 | |
Denis Vlasenko | 3734b94 | 2007-07-27 11:20:10 +0000 | [diff] [blame] | 55 | typedef char* ug_func(char *name, int bufsize, long uid); |
Denis Vlasenko | b8a8e60 | 2006-11-24 14:59:45 +0000 | [diff] [blame] | 56 | static char* get_cached(cache_t *cp, unsigned id, ug_func* fp) |
| 57 | { |
| 58 | int i; |
| 59 | for (i = 0; i < cp->size; i++) |
| 60 | if (cp->cache[i].id == id) |
| 61 | return cp->cache[i].name; |
| 62 | i = cp->size++; |
| 63 | cp->cache = xrealloc(cp->cache, cp->size * sizeof(*cp->cache)); |
| 64 | cp->cache[i].id = id; |
Denis Vlasenko | 3734b94 | 2007-07-27 11:20:10 +0000 | [diff] [blame] | 65 | /* Never fails. Generates numeric string if name isn't found */ |
| 66 | fp(cp->cache[i].name, sizeof(cp->cache[i].name), id); |
Denis Vlasenko | b8a8e60 | 2006-11-24 14:59:45 +0000 | [diff] [blame] | 67 | return cp->cache[i].name; |
| 68 | } |
Denis Vlasenko | c50f370 | 2006-11-24 14:57:31 +0000 | [diff] [blame] | 69 | const char* get_cached_username(uid_t uid) |
| 70 | { |
Denis Vlasenko | b8a8e60 | 2006-11-24 14:59:45 +0000 | [diff] [blame] | 71 | return get_cached(&username, uid, bb_getpwuid); |
Denis Vlasenko | c50f370 | 2006-11-24 14:57:31 +0000 | [diff] [blame] | 72 | } |
Denis Vlasenko | b8a8e60 | 2006-11-24 14:59:45 +0000 | [diff] [blame] | 73 | const char* get_cached_groupname(gid_t gid) |
Denis Vlasenko | c50f370 | 2006-11-24 14:57:31 +0000 | [diff] [blame] | 74 | { |
Denis Vlasenko | b8a8e60 | 2006-11-24 14:59:45 +0000 | [diff] [blame] | 75 | return get_cached(&groupname, gid, bb_getgrgid); |
Denis Vlasenko | 459e4d6 | 2006-11-05 00:43:51 +0000 | [diff] [blame] | 76 | } |
| 77 | |
| 78 | |
"Vladimir N. Oleynik" | 465300c | 2006-02-14 10:17:09 +0000 | [diff] [blame] | 79 | #define PROCPS_BUFSIZE 1024 |
| 80 | |
| 81 | static int read_to_buf(const char *filename, void *buf) |
Rob Landley | b280455 | 2006-02-13 22:04:27 +0000 | [diff] [blame] | 82 | { |
Denis Vlasenko | 5a65447 | 2007-06-10 17:11:59 +0000 | [diff] [blame] | 83 | int fd; |
| 84 | /* open_read_close() would do two reads, checking for EOF. |
| 85 | * When you have 10000 /proc/$NUM/stat to read, it isn't desirable */ |
| 86 | ssize_t ret = -1; |
| 87 | fd = open(filename, O_RDONLY); |
| 88 | if (fd >= 0) { |
| 89 | ret = read(fd, buf, PROCPS_BUFSIZE-1); |
| 90 | close(fd); |
| 91 | } |
Denis Vlasenko | ea62077 | 2006-10-14 02:23:43 +0000 | [diff] [blame] | 92 | ((char *)buf)[ret > 0 ? ret : 0] = '\0'; |
"Vladimir N. Oleynik" | 465300c | 2006-02-14 10:17:09 +0000 | [diff] [blame] | 93 | return ret; |
Rob Landley | b280455 | 2006-02-13 22:04:27 +0000 | [diff] [blame] | 94 | } |
| 95 | |
Denis Vlasenko | f7d07b1 | 2007-06-30 08:03:26 +0000 | [diff] [blame] | 96 | procps_status_t *alloc_procps_scan(int flags) |
Eric Andersen | 44608e9 | 2002-10-22 12:21:15 +0000 | [diff] [blame] | 97 | { |
Denis Vlasenko | 512499c | 2007-08-26 18:23:13 +0000 | [diff] [blame] | 98 | unsigned n = getpagesize(); |
Denis Vlasenko | 459e4d6 | 2006-11-05 00:43:51 +0000 | [diff] [blame] | 99 | procps_status_t* sp = xzalloc(sizeof(procps_status_t)); |
| 100 | sp->dir = xopendir("/proc"); |
Denis Vlasenko | 512499c | 2007-08-26 18:23:13 +0000 | [diff] [blame] | 101 | while (1) { |
| 102 | n >>= 1; |
| 103 | if (!n) break; |
| 104 | sp->shift_pages_to_bytes++; |
| 105 | } |
| 106 | sp->shift_pages_to_kb = sp->shift_pages_to_bytes - 10; |
Denis Vlasenko | 459e4d6 | 2006-11-05 00:43:51 +0000 | [diff] [blame] | 107 | return sp; |
| 108 | } |
Denis Vlasenko | 35fb512 | 2006-11-01 09:16:49 +0000 | [diff] [blame] | 109 | |
Denis Vlasenko | 459e4d6 | 2006-11-05 00:43:51 +0000 | [diff] [blame] | 110 | void free_procps_scan(procps_status_t* sp) |
| 111 | { |
| 112 | closedir(sp->dir); |
Denis Vlasenko | 98ebab8 | 2007-06-30 14:47:41 +0000 | [diff] [blame] | 113 | free(sp->argv0); |
Denis Vlasenko | 0696b8a | 2007-06-06 07:40:16 +0000 | [diff] [blame] | 114 | USE_SELINUX(free(sp->context);) |
Denis Vlasenko | 459e4d6 | 2006-11-05 00:43:51 +0000 | [diff] [blame] | 115 | free(sp); |
| 116 | } |
| 117 | |
Denis Vlasenko | ff6e8e2 | 2007-09-08 16:51:19 +0000 | [diff] [blame] | 118 | #if ENABLE_FEATURE_TOPMEM |
| 119 | static unsigned long fast_strtoul_16(char **endptr) |
| 120 | { |
| 121 | unsigned char c; |
| 122 | char *str = *endptr; |
| 123 | unsigned long n = 0; |
| 124 | |
| 125 | while ((c = *str++) != ' ') { |
| 126 | c = ((c|0x20) - '0'); |
| 127 | if (c > 9) |
| 128 | // c = c + '0' - 'a' + 10: |
| 129 | c = c - ('a' - '0' - 10); |
| 130 | n = n*16 + c; |
| 131 | } |
| 132 | *endptr = str; /* We skip trailing space! */ |
| 133 | return n; |
| 134 | } |
| 135 | /* TOPMEM uses fast_strtoul_10, so... */ |
| 136 | #undef ENABLE_FEATURE_FAST_TOP |
| 137 | #define ENABLE_FEATURE_FAST_TOP 1 |
| 138 | #endif |
| 139 | |
Denis Vlasenko | 3afac4c | 2007-06-19 13:46:24 +0000 | [diff] [blame] | 140 | #if ENABLE_FEATURE_FAST_TOP |
| 141 | /* We cut a lot of corners here for speed */ |
Denis Vlasenko | 42ee26d | 2007-06-30 08:01:04 +0000 | [diff] [blame] | 142 | static unsigned long fast_strtoul_10(char **endptr) |
Denis Vlasenko | 3afac4c | 2007-06-19 13:46:24 +0000 | [diff] [blame] | 143 | { |
| 144 | char c; |
Denis Vlasenko | 42ee26d | 2007-06-30 08:01:04 +0000 | [diff] [blame] | 145 | char *str = *endptr; |
Denis Vlasenko | 3afac4c | 2007-06-19 13:46:24 +0000 | [diff] [blame] | 146 | unsigned long n = *str - '0'; |
| 147 | |
| 148 | while ((c = *++str) != ' ') |
| 149 | n = n*10 + (c - '0'); |
| 150 | |
| 151 | *endptr = str + 1; /* We skip trailing space! */ |
| 152 | return n; |
| 153 | } |
| 154 | static char *skip_fields(char *str, int count) |
| 155 | { |
| 156 | do { |
Denis Vlasenko | 42ee26d | 2007-06-30 08:01:04 +0000 | [diff] [blame] | 157 | while (*str++ != ' ') |
| 158 | continue; |
| 159 | /* we found a space char, str points after it */ |
Denis Vlasenko | 3afac4c | 2007-06-19 13:46:24 +0000 | [diff] [blame] | 160 | } while (--count); |
| 161 | return str; |
| 162 | } |
| 163 | #endif |
| 164 | |
Denis Vlasenko | 459e4d6 | 2006-11-05 00:43:51 +0000 | [diff] [blame] | 165 | void BUG_comm_size(void); |
Denis Vlasenko | f7d07b1 | 2007-06-30 08:03:26 +0000 | [diff] [blame] | 166 | procps_status_t *procps_scan(procps_status_t* sp, int flags) |
Denis Vlasenko | 459e4d6 | 2006-11-05 00:43:51 +0000 | [diff] [blame] | 167 | { |
Denis Vlasenko | 35fb512 | 2006-11-01 09:16:49 +0000 | [diff] [blame] | 168 | struct dirent *entry; |
"Vladimir N. Oleynik" | 465300c | 2006-02-14 10:17:09 +0000 | [diff] [blame] | 169 | char buf[PROCPS_BUFSIZE]; |
Denis Vlasenko | 459e4d6 | 2006-11-05 00:43:51 +0000 | [diff] [blame] | 170 | char filename[sizeof("/proc//cmdline") + sizeof(int)*3]; |
| 171 | char *filename_tail; |
Eric Andersen | 44608e9 | 2002-10-22 12:21:15 +0000 | [diff] [blame] | 172 | long tasknice; |
Denis Vlasenko | 459e4d6 | 2006-11-05 00:43:51 +0000 | [diff] [blame] | 173 | unsigned pid; |
Denis Vlasenko | dd539f7 | 2006-11-01 20:20:37 +0000 | [diff] [blame] | 174 | int n; |
Eric Andersen | 44608e9 | 2002-10-22 12:21:15 +0000 | [diff] [blame] | 175 | struct stat sb; |
| 176 | |
Denis Vlasenko | 459e4d6 | 2006-11-05 00:43:51 +0000 | [diff] [blame] | 177 | if (!sp) |
| 178 | sp = alloc_procps_scan(flags); |
| 179 | |
Mike Frysinger | 58dda84 | 2006-07-12 20:04:00 +0000 | [diff] [blame] | 180 | for (;;) { |
Denis Vlasenko | 459e4d6 | 2006-11-05 00:43:51 +0000 | [diff] [blame] | 181 | entry = readdir(sp->dir); |
Denis Vlasenko | a6dbb08 | 2006-10-12 19:29:44 +0000 | [diff] [blame] | 182 | if (entry == NULL) { |
Denis Vlasenko | 459e4d6 | 2006-11-05 00:43:51 +0000 | [diff] [blame] | 183 | free_procps_scan(sp); |
| 184 | return NULL; |
Eric Andersen | 44608e9 | 2002-10-22 12:21:15 +0000 | [diff] [blame] | 185 | } |
Denis Vlasenko | d686a04 | 2006-11-27 14:43:21 +0000 | [diff] [blame] | 186 | pid = bb_strtou(entry->d_name, NULL, 10); |
| 187 | if (errno) |
Eric Andersen | 44608e9 | 2002-10-22 12:21:15 +0000 | [diff] [blame] | 188 | continue; |
| 189 | |
Denis Vlasenko | 459e4d6 | 2006-11-05 00:43:51 +0000 | [diff] [blame] | 190 | /* After this point we have to break, not continue |
| 191 | * ("continue" would mean that current /proc/NNN |
| 192 | * is not a valid process info) */ |
Eric Andersen | 44608e9 | 2002-10-22 12:21:15 +0000 | [diff] [blame] | 193 | |
Mike Frysinger | 0aa6ba5 | 2007-02-08 08:21:58 +0000 | [diff] [blame] | 194 | memset(&sp->vsz, 0, sizeof(*sp) - offsetof(procps_status_t, vsz)); |
Eric Andersen | 242ab83 | 2004-01-27 20:17:39 +0000 | [diff] [blame] | 195 | |
Denis Vlasenko | 459e4d6 | 2006-11-05 00:43:51 +0000 | [diff] [blame] | 196 | sp->pid = pid; |
| 197 | if (!(flags & ~PSSCAN_PID)) break; |
Eric Andersen | 44608e9 | 2002-10-22 12:21:15 +0000 | [diff] [blame] | 198 | |
Denis Vlasenko | 0696b8a | 2007-06-06 07:40:16 +0000 | [diff] [blame] | 199 | #if ENABLE_SELINUX |
| 200 | if (flags & PSSCAN_CONTEXT) { |
| 201 | if (getpidcon(sp->pid, &sp->context) < 0) |
| 202 | sp->context = NULL; |
Denis Vlasenko | 2f6ae43 | 2007-07-19 22:50:47 +0000 | [diff] [blame] | 203 | } |
| 204 | #endif |
Denis Vlasenko | 0696b8a | 2007-06-06 07:40:16 +0000 | [diff] [blame] | 205 | |
Denis Vlasenko | 459e4d6 | 2006-11-05 00:43:51 +0000 | [diff] [blame] | 206 | filename_tail = filename + sprintf(filename, "/proc/%d", pid); |
| 207 | |
| 208 | if (flags & PSSCAN_UIDGID) { |
| 209 | if (stat(filename, &sb)) |
| 210 | break; |
Denis Vlasenko | 2405ad6 | 2007-01-19 21:24:17 +0000 | [diff] [blame] | 211 | /* Need comment - is this effective or real UID/GID? */ |
Denis Vlasenko | 459e4d6 | 2006-11-05 00:43:51 +0000 | [diff] [blame] | 212 | sp->uid = sb.st_uid; |
| 213 | sp->gid = sb.st_gid; |
| 214 | } |
Denis Vlasenko | f7996f3 | 2007-01-11 17:20:00 +0000 | [diff] [blame] | 215 | |
Denis Vlasenko | 459e4d6 | 2006-11-05 00:43:51 +0000 | [diff] [blame] | 216 | if (flags & PSSCAN_STAT) { |
Denis Vlasenko | 42ee26d | 2007-06-30 08:01:04 +0000 | [diff] [blame] | 217 | char *cp, *comm1; |
| 218 | int tty; |
Denis Vlasenko | 3afac4c | 2007-06-19 13:46:24 +0000 | [diff] [blame] | 219 | #if !ENABLE_FEATURE_FAST_TOP |
Denis Vlasenko | 516a0ca | 2007-04-19 14:46:14 +0000 | [diff] [blame] | 220 | unsigned long vsz, rss; |
Denis Vlasenko | 3afac4c | 2007-06-19 13:46:24 +0000 | [diff] [blame] | 221 | #endif |
Denis Vlasenko | 516a0ca | 2007-04-19 14:46:14 +0000 | [diff] [blame] | 222 | |
Denis Vlasenko | 459e4d6 | 2006-11-05 00:43:51 +0000 | [diff] [blame] | 223 | /* see proc(5) for some details on this */ |
| 224 | strcpy(filename_tail, "/stat"); |
| 225 | n = read_to_buf(filename, buf); |
| 226 | if (n < 0) |
| 227 | break; |
| 228 | cp = strrchr(buf, ')'); /* split into "PID (cmd" and "<rest>" */ |
Denis Vlasenko | 42ee26d | 2007-06-30 08:01:04 +0000 | [diff] [blame] | 229 | /*if (!cp || cp[1] != ' ') |
| 230 | break;*/ |
Denis Vlasenko | 459e4d6 | 2006-11-05 00:43:51 +0000 | [diff] [blame] | 231 | cp[0] = '\0'; |
| 232 | if (sizeof(sp->comm) < 16) |
| 233 | BUG_comm_size(); |
Denis Vlasenko | 42ee26d | 2007-06-30 08:01:04 +0000 | [diff] [blame] | 234 | comm1 = strchr(buf, '('); |
| 235 | /*if (comm1)*/ |
| 236 | safe_strncpy(sp->comm, comm1 + 1, sizeof(sp->comm)); |
Denis Vlasenko | 3afac4c | 2007-06-19 13:46:24 +0000 | [diff] [blame] | 237 | |
| 238 | #if !ENABLE_FEATURE_FAST_TOP |
Denis Vlasenko | 459e4d6 | 2006-11-05 00:43:51 +0000 | [diff] [blame] | 239 | n = sscanf(cp+2, |
| 240 | "%c %u " /* state, ppid */ |
Denis Vlasenko | 516a0ca | 2007-04-19 14:46:14 +0000 | [diff] [blame] | 241 | "%u %u %d %*s " /* pgid, sid, tty, tpgid */ |
Denis Vlasenko | 459e4d6 | 2006-11-05 00:43:51 +0000 | [diff] [blame] | 242 | "%*s %*s %*s %*s %*s " /* flags, min_flt, cmin_flt, maj_flt, cmaj_flt */ |
| 243 | "%lu %lu " /* utime, stime */ |
| 244 | "%*s %*s %*s " /* cutime, cstime, priority */ |
| 245 | "%ld " /* nice */ |
Denis Vlasenko | 5fee2e1 | 2008-01-05 03:26:41 +0000 | [diff] [blame] | 246 | "%*s %*s " /* timeout, it_real_value */ |
| 247 | "%lu " /* start_time */ |
Denis Vlasenko | 516a0ca | 2007-04-19 14:46:14 +0000 | [diff] [blame] | 248 | "%lu " /* vsize */ |
| 249 | "%lu " /* rss */ |
| 250 | /* "%lu %lu %lu %lu %lu %lu " rss_rlim, start_code, end_code, start_stack, kstk_esp, kstk_eip */ |
| 251 | /* "%u %u %u %u " signal, blocked, sigignore, sigcatch */ |
| 252 | /* "%lu %lu %lu" wchan, nswap, cnswap */ |
| 253 | , |
Denis Vlasenko | 459e4d6 | 2006-11-05 00:43:51 +0000 | [diff] [blame] | 254 | sp->state, &sp->ppid, |
Denis Vlasenko | 516a0ca | 2007-04-19 14:46:14 +0000 | [diff] [blame] | 255 | &sp->pgid, &sp->sid, &tty, |
Denis Vlasenko | 459e4d6 | 2006-11-05 00:43:51 +0000 | [diff] [blame] | 256 | &sp->utime, &sp->stime, |
| 257 | &tasknice, |
Denis Vlasenko | 5fee2e1 | 2008-01-05 03:26:41 +0000 | [diff] [blame] | 258 | &sp->start_time, |
Denis Vlasenko | 516a0ca | 2007-04-19 14:46:14 +0000 | [diff] [blame] | 259 | &vsz, |
| 260 | &rss); |
| 261 | if (n != 10) |
Denis Vlasenko | 459e4d6 | 2006-11-05 00:43:51 +0000 | [diff] [blame] | 262 | break; |
Denis Vlasenko | 512499c | 2007-08-26 18:23:13 +0000 | [diff] [blame] | 263 | /* vsz is in bytes and we want kb */ |
| 264 | sp->vsz = vsz >> 10; |
| 265 | /* vsz is in bytes but rss is in *PAGES*! Can you believe that? */ |
| 266 | sp->rss = rss << sp->shift_pages_to_kb; |
Denis Vlasenko | 31789a8 | 2007-06-19 14:43:17 +0000 | [diff] [blame] | 267 | sp->tty_major = (tty >> 8) & 0xfff; |
Denis Vlasenko | 88976d0 | 2007-06-21 07:09:18 +0000 | [diff] [blame] | 268 | sp->tty_minor = (tty & 0xff) | ((tty >> 12) & 0xfff00); |
Denis Vlasenko | 3afac4c | 2007-06-19 13:46:24 +0000 | [diff] [blame] | 269 | #else |
| 270 | /* This costs ~100 bytes more but makes top faster by 20% |
| 271 | * If you run 10000 processes, this may be important for you */ |
Denis Vlasenko | 31789a8 | 2007-06-19 14:43:17 +0000 | [diff] [blame] | 272 | sp->state[0] = cp[2]; |
Denis Vlasenko | 42ee26d | 2007-06-30 08:01:04 +0000 | [diff] [blame] | 273 | cp += 4; |
| 274 | sp->ppid = fast_strtoul_10(&cp); |
| 275 | sp->pgid = fast_strtoul_10(&cp); |
| 276 | sp->sid = fast_strtoul_10(&cp); |
| 277 | tty = fast_strtoul_10(&cp); |
Denis Vlasenko | 31789a8 | 2007-06-19 14:43:17 +0000 | [diff] [blame] | 278 | sp->tty_major = (tty >> 8) & 0xfff; |
| 279 | sp->tty_minor = (tty & 0xff) | ((tty >> 12) & 0xfff00); |
Denis Vlasenko | 3afac4c | 2007-06-19 13:46:24 +0000 | [diff] [blame] | 280 | cp = skip_fields(cp, 6); /* tpgid, flags, min_flt, cmin_flt, maj_flt, cmaj_flt */ |
Denis Vlasenko | 42ee26d | 2007-06-30 08:01:04 +0000 | [diff] [blame] | 281 | sp->utime = fast_strtoul_10(&cp); |
| 282 | sp->stime = fast_strtoul_10(&cp); |
Denis Vlasenko | 3afac4c | 2007-06-19 13:46:24 +0000 | [diff] [blame] | 283 | cp = skip_fields(cp, 3); /* cutime, cstime, priority */ |
Denis Vlasenko | 42ee26d | 2007-06-30 08:01:04 +0000 | [diff] [blame] | 284 | tasknice = fast_strtoul_10(&cp); |
Denis Vlasenko | 5fee2e1 | 2008-01-05 03:26:41 +0000 | [diff] [blame] | 285 | cp = skip_fields(cp, 2); /* timeout, it_real_value */ |
| 286 | sp->start_time = fast_strtoul_10(&cp); |
Denis Vlasenko | 512499c | 2007-08-26 18:23:13 +0000 | [diff] [blame] | 287 | /* vsz is in bytes and we want kb */ |
| 288 | sp->vsz = fast_strtoul_10(&cp) >> 10; |
| 289 | /* vsz is in bytes but rss is in *PAGES*! Can you believe that? */ |
| 290 | sp->rss = fast_strtoul_10(&cp) << sp->shift_pages_to_kb; |
Denis Vlasenko | 3afac4c | 2007-06-19 13:46:24 +0000 | [diff] [blame] | 291 | #endif |
| 292 | |
Mike Frysinger | 0aa6ba5 | 2007-02-08 08:21:58 +0000 | [diff] [blame] | 293 | if (sp->vsz == 0 && sp->state[0] != 'Z') |
Denis Vlasenko | 459e4d6 | 2006-11-05 00:43:51 +0000 | [diff] [blame] | 294 | sp->state[1] = 'W'; |
| 295 | else |
| 296 | sp->state[1] = ' '; |
| 297 | if (tasknice < 0) |
| 298 | sp->state[2] = '<'; |
Denis Vlasenko | 516a0ca | 2007-04-19 14:46:14 +0000 | [diff] [blame] | 299 | else if (tasknice) /* > 0 */ |
Denis Vlasenko | 459e4d6 | 2006-11-05 00:43:51 +0000 | [diff] [blame] | 300 | sp->state[2] = 'N'; |
| 301 | else |
| 302 | sp->state[2] = ' '; |
Eric Andersen | 44608e9 | 2002-10-22 12:21:15 +0000 | [diff] [blame] | 303 | |
Eric Andersen | 44608e9 | 2002-10-22 12:21:15 +0000 | [diff] [blame] | 304 | } |
Denis Vlasenko | 459e4d6 | 2006-11-05 00:43:51 +0000 | [diff] [blame] | 305 | |
Denis Vlasenko | ff6e8e2 | 2007-09-08 16:51:19 +0000 | [diff] [blame] | 306 | #if ENABLE_FEATURE_TOPMEM |
| 307 | if (flags & (PSSCAN_SMAPS)) { |
| 308 | FILE *file; |
| 309 | |
| 310 | strcpy(filename_tail, "/smaps"); |
| 311 | file = fopen(filename, "r"); |
| 312 | if (!file) |
| 313 | break; |
| 314 | while (fgets(buf, sizeof(buf), file)) { |
| 315 | unsigned long sz; |
| 316 | char *tp; |
| 317 | char w; |
| 318 | #define SCAN(str, name) \ |
| 319 | if (strncmp(buf, str, sizeof(str)-1) == 0) { \ |
| 320 | tp = skip_whitespace(buf + sizeof(str)-1); \ |
| 321 | sp->name += fast_strtoul_10(&tp); \ |
| 322 | continue; \ |
| 323 | } |
| 324 | SCAN("Shared_Clean:" , shared_clean ); |
| 325 | SCAN("Shared_Dirty:" , shared_dirty ); |
| 326 | SCAN("Private_Clean:", private_clean); |
| 327 | SCAN("Private_Dirty:", private_dirty); |
| 328 | #undef SCAN |
| 329 | // f7d29000-f7d39000 rw-s ADR M:m OFS FILE |
| 330 | tp = strchr(buf, '-'); |
| 331 | if (tp) { |
| 332 | *tp = ' '; |
| 333 | tp = buf; |
| 334 | sz = fast_strtoul_16(&tp); /* start */ |
| 335 | sz = (fast_strtoul_16(&tp) - sz) >> 10; /* end - start */ |
| 336 | // tp -> "rw-s" string |
| 337 | w = tp[1]; |
| 338 | // skipping "rw-s ADR M:m OFS " |
| 339 | tp = skip_whitespace(skip_fields(tp, 4)); |
| 340 | // filter out /dev/something (something != zero) |
| 341 | if (strncmp(tp, "/dev/", 5) != 0 || strcmp(tp, "/dev/zero\n") == 0) { |
| 342 | if (w == 'w') { |
| 343 | sp->mapped_rw += sz; |
| 344 | } else if (w == '-') { |
| 345 | sp->mapped_ro += sz; |
| 346 | } |
| 347 | } |
| 348 | //else printf("DROPPING %s (%s)\n", buf, tp); |
| 349 | if (strcmp(tp, "[stack]\n") == 0) |
| 350 | sp->stack += sz; |
| 351 | } |
| 352 | } |
| 353 | fclose(file); |
| 354 | } |
| 355 | #endif /* TOPMEM */ |
| 356 | |
Denis Vlasenko | 98ebab8 | 2007-06-30 14:47:41 +0000 | [diff] [blame] | 357 | #if 0 /* PSSCAN_CMD is not used */ |
Denis Vlasenko | f7d07b1 | 2007-06-30 08:03:26 +0000 | [diff] [blame] | 358 | if (flags & (PSSCAN_CMD|PSSCAN_ARGV0)) { |
Denis Vlasenko | ab8c937 | 2007-09-28 22:13:55 +0000 | [diff] [blame] | 359 | free(sp->argv0); |
| 360 | sp->argv0 = NULL; |
| 361 | free(sp->cmd); |
| 362 | sp->cmd = NULL; |
Denis Vlasenko | 459e4d6 | 2006-11-05 00:43:51 +0000 | [diff] [blame] | 363 | strcpy(filename_tail, "/cmdline"); |
Denis Vlasenko | f7d07b1 | 2007-06-30 08:03:26 +0000 | [diff] [blame] | 364 | /* TODO: to get rid of size limits, read into malloc buf, |
| 365 | * then realloc it down to real size. */ |
Denis Vlasenko | 459e4d6 | 2006-11-05 00:43:51 +0000 | [diff] [blame] | 366 | n = read_to_buf(filename, buf); |
| 367 | if (n <= 0) |
| 368 | break; |
Denis Vlasenko | f7d07b1 | 2007-06-30 08:03:26 +0000 | [diff] [blame] | 369 | if (flags & PSSCAN_ARGV0) |
| 370 | sp->argv0 = xstrdup(buf); |
| 371 | if (flags & PSSCAN_CMD) { |
| 372 | do { |
| 373 | n--; |
| 374 | if ((unsigned char)(buf[n]) < ' ') |
| 375 | buf[n] = ' '; |
| 376 | } while (n); |
| 377 | sp->cmd = xstrdup(buf); |
Denis Vlasenko | 459e4d6 | 2006-11-05 00:43:51 +0000 | [diff] [blame] | 378 | } |
Denis Vlasenko | 459e4d6 | 2006-11-05 00:43:51 +0000 | [diff] [blame] | 379 | } |
Denis Vlasenko | 98ebab8 | 2007-06-30 14:47:41 +0000 | [diff] [blame] | 380 | #else |
Denis Vlasenko | 304a97a | 2007-09-29 22:49:26 +0000 | [diff] [blame] | 381 | if (flags & (PSSCAN_ARGV0|PSSCAN_ARGVN)) { |
Denis Vlasenko | ab8c937 | 2007-09-28 22:13:55 +0000 | [diff] [blame] | 382 | free(sp->argv0); |
| 383 | sp->argv0 = NULL; |
Denis Vlasenko | 98ebab8 | 2007-06-30 14:47:41 +0000 | [diff] [blame] | 384 | strcpy(filename_tail, "/cmdline"); |
| 385 | n = read_to_buf(filename, buf); |
| 386 | if (n <= 0) |
| 387 | break; |
Denis Vlasenko | 72e1c89 | 2007-09-29 22:26:01 +0000 | [diff] [blame] | 388 | #if ENABLE_PGREP || ENABLE_PKILL |
| 389 | if (flags & PSSCAN_ARGVN) { |
| 390 | do { |
| 391 | n--; |
| 392 | if (buf[n] == '\0') |
| 393 | buf[n] = ' '; |
| 394 | } while (n); |
| 395 | } |
| 396 | #endif |
Denis Vlasenko | 1ebd0a6 | 2007-09-29 18:27:14 +0000 | [diff] [blame] | 397 | sp->argv0 = xstrdup(buf); |
Denis Vlasenko | 98ebab8 | 2007-06-30 14:47:41 +0000 | [diff] [blame] | 398 | } |
| 399 | #endif |
Denis Vlasenko | 459e4d6 | 2006-11-05 00:43:51 +0000 | [diff] [blame] | 400 | break; |
Eric Andersen | 44608e9 | 2002-10-22 12:21:15 +0000 | [diff] [blame] | 401 | } |
Denis Vlasenko | 459e4d6 | 2006-11-05 00:43:51 +0000 | [diff] [blame] | 402 | return sp; |
Eric Andersen | 44608e9 | 2002-10-22 12:21:15 +0000 | [diff] [blame] | 403 | } |
Denis Vlasenko | 98ebab8 | 2007-06-30 14:47:41 +0000 | [diff] [blame] | 404 | |
| 405 | void read_cmdline(char *buf, int col, unsigned pid, const char *comm) |
| 406 | { |
| 407 | ssize_t sz; |
| 408 | char filename[sizeof("/proc//cmdline") + sizeof(int)*3]; |
| 409 | |
| 410 | sprintf(filename, "/proc/%u/cmdline", pid); |
| 411 | sz = open_read_close(filename, buf, col); |
| 412 | if (sz > 0) { |
| 413 | buf[sz] = '\0'; |
| 414 | while (--sz >= 0) |
| 415 | if ((unsigned char)(buf[sz]) < ' ') |
| 416 | buf[sz] = ' '; |
| 417 | } else { |
| 418 | snprintf(buf, col, "[%s]", comm); |
| 419 | } |
| 420 | } |
| 421 | |
Denis Vlasenko | 459e4d6 | 2006-11-05 00:43:51 +0000 | [diff] [blame] | 422 | /* from kernel: |
| 423 | // pid comm S ppid pgid sid tty_nr tty_pgrp flg |
Denis Vlasenko | d031ffa | 2006-11-24 21:54:44 +0000 | [diff] [blame] | 424 | sprintf(buffer,"%d (%s) %c %d %d %d %d %d %lu %lu \ |
Denis Vlasenko | 459e4d6 | 2006-11-05 00:43:51 +0000 | [diff] [blame] | 425 | %lu %lu %lu %lu %lu %ld %ld %ld %ld %d 0 %llu %lu %ld %lu %lu %lu %lu %lu \ |
| 426 | %lu %lu %lu %lu %lu %lu %lu %lu %d %d %lu %lu %llu\n", |
Denis Vlasenko | d031ffa | 2006-11-24 21:54:44 +0000 | [diff] [blame] | 427 | task->pid, |
| 428 | tcomm, |
| 429 | state, |
| 430 | ppid, |
| 431 | pgid, |
| 432 | sid, |
| 433 | tty_nr, |
| 434 | tty_pgrp, |
| 435 | task->flags, |
| 436 | min_flt, |
Denis Vlasenko | d031ffa | 2006-11-24 21:54:44 +0000 | [diff] [blame] | 437 | cmin_flt, |
| 438 | maj_flt, |
| 439 | cmaj_flt, |
| 440 | cputime_to_clock_t(utime), |
| 441 | cputime_to_clock_t(stime), |
| 442 | cputime_to_clock_t(cutime), |
| 443 | cputime_to_clock_t(cstime), |
| 444 | priority, |
| 445 | nice, |
| 446 | num_threads, |
| 447 | // 0, |
| 448 | start_time, |
| 449 | vsize, |
| 450 | mm ? get_mm_rss(mm) : 0, |
| 451 | rsslim, |
| 452 | mm ? mm->start_code : 0, |
| 453 | mm ? mm->end_code : 0, |
| 454 | mm ? mm->start_stack : 0, |
| 455 | esp, |
| 456 | eip, |
Denis Vlasenko | 459e4d6 | 2006-11-05 00:43:51 +0000 | [diff] [blame] | 457 | the rest is some obsolete cruft |
| 458 | */ |