diff options
| -rw-r--r-- | toys/pending/killall5.c | 97 |
1 files changed, 97 insertions, 0 deletions
diff --git a/toys/pending/killall5.c b/toys/pending/killall5.c new file mode 100644 index 00000000..4d9dadce --- /dev/null +++ b/toys/pending/killall5.c @@ -0,0 +1,97 @@ +/* killall5.c - Send signal (default: TERM) to all processes outside current session. + * + * Copyright 2014 Ranjan Kumar <ranjankumar.bth@gmail.com> + * Copyright 2014 Kyungwan Han <asura321@gamil.com> + * + * No Standard + +USE_KILLALL5(NEWTOY(killall5, "?o*ls:[!lo]", TOYFLAG_SBIN)) + +config KILLALL5 + bool "killall5" + default n + help + usage: killall5 [-l] [-SIGNAL|-s SIGNAL] [-o PID]... + + Send a signal (default: TERM) to all processes outside current session. + + -l List all signal names and numbers + -o PID Don't signal this PID + -s send SIGNAL instead of SIGTERM +*/ +#define FOR_killall5 +#include "toys.h" + +GLOBALS( + char *signame; + struct arg_list *olist; +) + +void killall5_main(void) +{ + DIR *dp; + struct dirent *entry; + int signo, pid, sid, signum = SIGTERM; + long *olist = NULL, ocount = 0; + char *s, **args = toys.optargs; + + // list all signal names and numbers + if (toys.optflags & FLAG_l) { + if (*args) { + for (; *args; args++) { + signo = sig_to_num(*args); + if (isdigit(**args) && (s = num_to_sig(signo&127))) xputs(s); + else if (signo > 0) xprintf("%d\n", signo); + else error_exit("UNKNOWN signal '%s'", *args); + } + } else sig_to_num(NULL); + return; + } + + // when SIGNUM will be in the form of -SIGNUM + if (TT.signame || (*args && **args == '-')) { + if (0 > (signum = sig_to_num(TT.signame ? TT.signame : (*args)+1))) + error_exit("Unknown signal '%s'", *args); + if (!TT.signame) args++; + } + pid = getpid(); + sid = getsid(pid); + + // prepare omit list + if (toys.optflags & FLAG_o) { + struct arg_list *ptr = TT.olist; + + if (*args) error_exit("invalid omit list"); + for (; ptr; ptr=ptr->next) { + long val = atolx(ptr->arg); + olist = xrealloc(olist, (ocount+1)*sizeof(long)); + olist[ocount++] = val; + } + } + + if (!(dp = opendir("/proc"))) perror_exit("opendir"); + while ((entry = readdir(dp))) { + int count, procpid, procsid; + + if (!(procpid = atoi(entry->d_name))) continue; + snprintf(toybuf, sizeof(toybuf), "/proc/%d/stat", procpid); + if (!readfile(toybuf, toybuf, sizeof(toybuf))) continue; + if (sscanf(toybuf, "%*d %*s %*c %*d %*d %d", &procsid) != 1) continue; + if (pid == procpid || sid == procsid || procpid == 1) continue; + + // Check for kernel threads. + snprintf(toybuf, sizeof(toybuf), "/proc/%d/cmdline", procpid); + if (readfile(toybuf, toybuf, sizeof(toybuf)) && !*toybuf) continue; + + // Check with omit list. + if (toys.optflags & FLAG_o) { + for (count = 0; count < ocount; count++) { + if (procpid == olist[count]) goto OMIT; + } + } + kill(procpid, signum); +OMIT: ; + } + closedir(dp); + if (CFG_TOYBOX_FREE && olist) free(olist); +} |