diff options
Diffstat (limited to 'toys/pending/pgrep.c')
| -rw-r--r-- | toys/pending/pgrep.c | 159 |
1 files changed, 0 insertions, 159 deletions
diff --git a/toys/pending/pgrep.c b/toys/pending/pgrep.c deleted file mode 100644 index 8c115fff..00000000 --- a/toys/pending/pgrep.c +++ /dev/null @@ -1,159 +0,0 @@ -/* pgrep.c - pgrep and pkill implementation - * - * Copyright 2012 Madhur Verma <mad.flexi@gmail.com> - * Copyright 2013 Kyungwan Han <asura321@gmail.com> - * - -USE_PGREP(NEWTOY(pgrep, "?P# s# xvonlf[!sP]", TOYFLAG_USR|TOYFLAG_BIN)) -USE_PGREP(OLDTOY(pkill, pgrep, TOYFLAG_USR|TOYFLAG_BIN)) - -config PGREP - bool "pgrep" - default n - help - usage: pgrep [-flnovx] [-s SID|-P PPID|PATTERN] - pkill [-l|-SIGNAL] [-fnovx] [-s SID|-P PPID|PATTERN] - - -l Show command name too / List all signals - -f Match against entire command line - -n Show/Signal the newest process only - -o Show/Signal the oldest process only - -v Negate the match - -x Match whole name (not substring) - -s Match session ID (0 for current) - -P Match parent process ID -*/ - -#define FOR_pgrep -#include "toys.h" - -GLOBALS( - long sid; //-s - long ppid; //-P - - char *signame; -) - -static int exec_action(unsigned pid, char *name, int signal) -{ - if (toys.which->name[1] == 'g') { - printf("%d", pid); - if (toys.optflags&FLAG_l) printf(" %s", name); - printf("\n"); - } else kill(pid, signal); - - return 0; -} - -static int regex_match(regex_t *rp, char *tar, char *patt) -{ - regmatch_t rm[1]; - int len = strlen(tar); - if (regexec(rp, tar, 1, rm, 0) == 0) { - if (toys.optflags&FLAG_x) { - if ((rm[0].rm_so == 0) && ((rm[0].rm_eo - rm[0].rm_so) == len)) return 1; - } else return 1; - } - return 0; -} - -void pgrep_main(void) -{ - int signum = 0, eval = 0, ret = 1; - DIR *dp = 0; - struct dirent *entry = 0; - regex_t rp; - unsigned pid = 0, ppid = 0, sid = 0, latest_pid = 0; - char *cmdline = 0, *latest_cmdline = 0; - pid_t self = getpid(); - - if (!(dp = opendir("/proc"))) perror_exit("OPENDIR: failed to open /proc"); - setlinebuf(stdout); - - // pkill - if (toys.which->name[1] == 'k') { - if (toys.optflags&FLAG_l) { - sig_to_num(0); - - return; - } -// note: "pkill -" on ubuntu uses "-" as the pattern, this would error instead - if (*toys.optargs && **toys.optargs == '-') { - char *arg; - int i = strtol(TT.signame = *(toys.optargs++)+1, &arg, 10); - - if (!*arg) arg = num_to_sig(i); - else arg = TT.signame; - if (!arg || (signum = sig_to_num(arg)) == -1) - error_exit("Unknown signal '%s'", arg); - } else signum = SIGTERM; - } - if (!(toys.optflags&(FLAG_s|FLAG_P)) && !*toys.optargs) - help_exit("missing argument"); - if (toys.optargs[1] && !(toys.optflags&(FLAG_s|FLAG_P))) - help_exit("max argument > 1"); - if (*toys.optargs) { /* compile regular expression(PATTERN) */ - if ((eval = regcomp(&rp, *toys.optargs, REG_EXTENDED | REG_NOSUB)) != 0) { - char errbuf[256]; - - (void) regerror(eval, &rp, errbuf, sizeof(errbuf)); - error_exit("%s", errbuf); - } - } - if ((toys.optflags&FLAG_s) && !TT.sid) TT.sid = getsid(0); - while ((entry = readdir(dp))) { - int fd = -1, n = 0; - if (!isdigit(*entry->d_name)) continue; - - pid = strtol(entry->d_name, NULL, 10); - if (pid == self) continue; - - snprintf(toybuf, sizeof(toybuf), "/proc/%s/cmdline", entry->d_name); - if ((fd = open(toybuf, O_RDONLY)) == -1) goto cmdline_fail; - n = read(fd, toybuf, sizeof(toybuf)); - close(fd); - toybuf[n--] = '\0'; - if (n < 0) { -cmdline_fail: - snprintf(toybuf, sizeof(toybuf), "/proc/%s/comm", entry->d_name); - if ((fd = open(toybuf, O_RDONLY)) == -1) continue; - n = read(fd, toybuf, sizeof(toybuf)); - close(fd); - toybuf[--n] = '\0'; - if (n < 1) continue; - } - if (toys.optflags & FLAG_f) { - while (--n) - if (toybuf[n] < ' ') toybuf[n] = ' '; - } - if (cmdline) free(cmdline); - cmdline = xstrdup(toybuf); - if (toys.optflags&(FLAG_s|FLAG_P)) { - snprintf(toybuf, sizeof(toybuf), "/proc/%s/stat", entry->d_name); - if ((fd = open(toybuf, O_RDONLY)) == -1) continue; - n = read(fd, toybuf, sizeof(toybuf)); - close(fd); - if (n<1) continue; - n = sscanf(toybuf, "%*u %*s %*c %u %*u %u", &ppid, &sid); - if ((toys.optflags&FLAG_s) && sid != TT.sid) continue; - if ((toys.optflags&FLAG_P) && ppid != TT.ppid) continue; - } - if (!*toys.optargs || (regex_match(&rp, cmdline, *toys.optargs)^!!(toys.optflags&FLAG_v))) { - if (toys.optflags&FLAG_n) { - if (latest_cmdline) free(latest_cmdline); - latest_cmdline = xstrdup(cmdline); - latest_pid = pid; - } else exec_action(pid, cmdline, signum); - ret = 0; - if (toys.optflags&FLAG_o) break; - } - } - if (cmdline) free(cmdline); - if (latest_cmdline) { - exec_action(latest_pid, latest_cmdline, signum); - free(latest_cmdline); - } - if (*toys.optargs) regfree(&rp); - closedir(dp); - toys.exitval = ret; -} |