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* |
* |
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* Licensed under the GPL v2 or later, see the file LICENSE in this tarball. |
* Licensed under the GPL v2 or later, see the file LICENSE in this tarball. |
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*/ |
*/ |
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#include "libbb.h" |
#include "libbb.h" |
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#include "xregex.h" |
#include "xregex.h" |
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#define pkill (ENABLE_PKILL && applet_name[1] == 'k') |
#define pkill (ENABLE_PKILL && applet_name[1] == 'k') |
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enum { |
enum { |
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/* "vlfxon" */ |
/* "vlfxons:P:" */ |
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PGREPOPTBIT_V = 0, /* must be first, we need OPT_INVERT = 0/1 */ |
OPTBIT_V = 0, /* must be first, we need OPT_INVERT = 0/1 */ |
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PGREPOPTBIT_L, |
OPTBIT_L, |
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PGREPOPTBIT_F, |
OPTBIT_F, |
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PGREPOPTBIT_X, |
OPTBIT_X, |
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PGREPOPTBIT_O, |
OPTBIT_O, |
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PGREPOPTBIT_N, |
OPTBIT_N, |
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OPTBIT_S, |
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OPTBIT_P, |
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}; |
}; |
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#define OPT_INVERT (opt & (1 << PGREPOPTBIT_V)) |
#define OPT_INVERT (opt & (1 << OPTBIT_V)) |
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#define OPT_LIST (opt & (1 << PGREPOPTBIT_L)) |
#define OPT_LIST (opt & (1 << OPTBIT_L)) |
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#define OPT_FULL (opt & (1 << PGREPOPTBIT_F)) |
#define OPT_FULL (opt & (1 << OPTBIT_F)) |
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#define OPT_ANCHOR (opt & (1 << PGREPOPTBIT_X)) |
#define OPT_ANCHOR (opt & (1 << OPTBIT_X)) |
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#define OPT_FIRST (opt & (1 << PGREPOPTBIT_O)) |
#define OPT_FIRST (opt & (1 << OPTBIT_O)) |
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#define OPT_LAST (opt & (1 << PGREPOPTBIT_N)) |
#define OPT_LAST (opt & (1 << OPTBIT_N)) |
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#define OPT_SID (opt & (1 << OPTBIT_S)) |
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#define OPT_PPID (opt & (1 << OPTBIT_P)) |
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static void act(unsigned pid, char *cmd, int signo, unsigned opt) |
static void act(unsigned pid, char *cmd, int signo) |
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{ |
{ |
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if (pgrep) { |
if (pgrep) { |
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if (OPT_LIST) |
if (option_mask32 & (1 << OPTBIT_L)) /* OPT_LIST */ |
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printf("%d %s\n", pid, cmd); |
printf("%d %s\n", pid, cmd); |
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else |
else |
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printf("%d\n", pid); |
printf("%d\n", pid); |
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int pgrep_main(int argc, char **argv) MAIN_EXTERNALLY_VISIBLE; |
int pgrep_main(int argc, char **argv) MAIN_EXTERNALLY_VISIBLE; |
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int pgrep_main(int argc UNUSED_PARAM, char **argv) |
int pgrep_main(int argc UNUSED_PARAM, char **argv) |
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{ |
{ |
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unsigned pid = getpid(); |
unsigned pid; |
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int signo = SIGTERM; |
int signo; |
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unsigned opt; |
unsigned opt; |
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int scan_mask = PSSCAN_COMM; |
int scan_mask; |
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char *first_arg; |
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int first_arg_idx; |
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int matched_pid; |
int matched_pid; |
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int sid2match, ppid2match; |
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char *cmd_last; |
char *cmd_last; |
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procps_status_t *proc; |
procps_status_t *proc; |
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/* These are initialized to 0 */ |
/* These are initialized to 0 */ |
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memset(&Z, 0, sizeof(Z)); |
memset(&Z, 0, sizeof(Z)); |
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/* We must avoid interpreting -NUM (signal num) as an option */ |
/* Parse -SIGNAL for pkill. Must be first option, if present */ |
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first_arg_idx = 1; |
signo = SIGTERM; |
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while (1) { |
if (pkill && argv[1] && argv[1][0] == '-') { |
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first_arg = argv[first_arg_idx]; |
int temp = get_signum(argv[1]+1); |
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if (!first_arg) |
if (temp != -1) { |
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break; |
signo = temp; |
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/* not "-<small_letter>..."? */ |
argv++; |
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if (first_arg[0] != '-' || first_arg[1] < 'a' || first_arg[1] > 'z') { |
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argv[first_arg_idx] = NULL; /* terminate argv here */ |
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break; |
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} |
} |
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first_arg_idx++; |
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} |
} |
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opt = getopt32(argv, "vlfxon"); |
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argv[first_arg_idx] = first_arg; |
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/* Parse remaining options */ |
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ppid2match = -1; |
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sid2match = -1; |
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opt_complementary = "s+:P+"; /* numeric opts */ |
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opt = getopt32(argv, "vlfxons:P:", &sid2match, &ppid2match); |
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argv += optind; |
argv += optind; |
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//argc -= optind; - unused anyway |
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if (OPT_FULL) |
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scan_mask |= PSSCAN_ARGVN; |
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if (pkill) { |
if (pkill && OPT_LIST) { /* -l: print the whole signal list */ |
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if (OPT_LIST) { /* -l: print the whole signal list */ |
print_signames(); |
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print_signames(); |
return 0; |
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return 0; |
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} |
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if (first_arg && first_arg[0] == '-') { |
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signo = get_signum(&first_arg[1]); |
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if (signo < 0) /* || signo > MAX_SIGNUM ? */ |
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bb_error_msg_and_die("bad signal name '%s'", &first_arg[1]); |
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argv++; |
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} |
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} |
} |
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/* One pattern is required */ |
pid = getpid(); |
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if (!argv[0] || argv[1]) |
if (sid2match == 0) |
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sid2match = getsid(pid); |
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scan_mask = PSSCAN_COMM | PSSCAN_ARGV0; |
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if (OPT_FULL) |
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scan_mask |= PSSCAN_ARGVN; |
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/* One pattern is required, if no -s and no -P */ |
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if ((sid2match & ppid2match) < 0 && (!argv[0] || argv[1])) |
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bb_show_usage(); |
bb_show_usage(); |
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xregcomp(&re_buffer, argv[0], 0); |
if (argv[0]) |
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xregcomp(&re_buffer, argv[0], 0); |
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matched_pid = 0; |
matched_pid = 0; |
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cmd_last = NULL; |
cmd_last = NULL; |
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proc = NULL; |
proc = NULL; |
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while ((proc = procps_scan(proc, scan_mask)) != NULL) { |
while ((proc = procps_scan(proc, scan_mask)) != NULL) { |
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char *cmd; |
char *cmd; |
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if (proc->pid == pid) |
if (proc->pid == pid) |
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continue; |
continue; |
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cmd = proc->argv0; |
cmd = proc->argv0; |
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if (!cmd) { |
if (!cmd) { |
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cmd = proc->comm; |
cmd = proc->comm; |
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} else { |
} else { |
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int i = proc->argv_len; |
int i = proc->argv_len; |
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while (i) { |
while (--i >= 0) { |
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if (!cmd[i]) cmd[i] = ' '; |
if ((unsigned char)cmd[i] < ' ') |
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i--; |
cmd[i] = ' '; |
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} |
} |
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} |
} |
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if (ppid2match >= 0 && ppid2match != proc->ppid) |
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continue; |
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if (sid2match >= 0 && sid2match != proc->sid) |
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continue; |
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/* NB: OPT_INVERT is always 0 or 1 */ |
/* NB: OPT_INVERT is always 0 or 1 */ |
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if ((regexec(&re_buffer, cmd, 1, re_match, 0) == 0 /* match found */ |
if (!argv[0] || |
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(regexec(&re_buffer, cmd, 1, re_match, 0) == 0 /* match found */ |
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&& (!OPT_ANCHOR || (re_match[0].rm_so == 0 && re_match[0].rm_eo == (regoff_t)strlen(cmd)))) ^ OPT_INVERT |
&& (!OPT_ANCHOR || (re_match[0].rm_so == 0 && re_match[0].rm_eo == (regoff_t)strlen(cmd)))) ^ OPT_INVERT |
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) { |
) { |
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matched_pid = proc->pid; |
matched_pid = proc->pid; |
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cmd_last = xstrdup(cmd); |
cmd_last = xstrdup(cmd); |
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continue; |
continue; |
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} |
} |
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act(proc->pid, cmd, signo, opt); |
act(proc->pid, cmd, signo); |
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if (OPT_FIRST) |
if (OPT_FIRST) |
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break; |
break; |
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} |
} |
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} |
} |
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if (cmd_last) { |
if (cmd_last) { |
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act(matched_pid, cmd_last, signo, opt); |
act(matched_pid, cmd_last, signo); |
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if (ENABLE_FEATURE_CLEAN_UP) |
if (ENABLE_FEATURE_CLEAN_UP) |
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free(cmd_last); |
free(cmd_last); |
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} |
} |