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authorMattias Andrée <maandree@kth.se>2017-10-17 20:11:30 +0200
committerMattias Andrée <maandree@kth.se>2017-10-17 20:11:30 +0200
commita568a539bbbe387cef14185488a75e8d3825c68b (patch)
tree06ecb3bd0ec4e328ed6ad63a49de0f23c9b3f7fc /src/pdeath.c
parentMakefile: fix uninstall rule: uninstall license (diff)
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Simplify
Signed-off-by: Mattias Andrée <maandree@kth.se>
Diffstat (limited to 'src/pdeath.c')
-rw-r--r--src/pdeath.c170
1 files changed, 0 insertions, 170 deletions
diff --git a/src/pdeath.c b/src/pdeath.c
deleted file mode 100644
index 2d564a8..0000000
--- a/src/pdeath.c
+++ /dev/null
@@ -1,170 +0,0 @@
-/* See LICENSE file for copyright and license details. */
-
-#include <sys/prctl.h>
-#include <errno.h>
-#include <limits.h>
-#include <signal.h>
-#include <stdio.h>
-#include <stdlib.h>
-#include <string.h>
-#include <strings.h>
-#include <unistd.h>
-
-#define FAILURE 127
-
-struct sig {
- int signo;
- const char *name;
-} sigs[] = {
- {SIGHUP, "HUP"},
- {SIGINT, "INT"},
- {SIGQUIT, "QUIT"},
- {SIGILL, "ILL"},
- {SIGTRAP, "TRAP"},
- {SIGABRT, "ABRT"},
- {SIGIOT, "IOT"},
- {SIGBUS, "BUS"},
- {SIGFPE, "FPE"},
- {SIGKILL, "KILL"},
- {SIGUSR1, "USR1"},
- {SIGSEGV, "SEGV"},
- {SIGUSR2, "USR2"},
- {SIGPIPE, "PIPE"},
- {SIGALRM, "ALRM"},
- {SIGTERM, "TERM"},
- {SIGSTKFLT, "TKFLT"},
- {SIGCLD, "CLD"},
- {SIGCHLD, "CHLD"},
- {SIGCONT, "CONT"},
- {SIGSTOP, "STOP"},
- {SIGTSTP, "TSTP"},
- {SIGTTIN, "TTIN"},
- {SIGTTOU, "TTOU"},
- {SIGURG, "URG"},
- {SIGXCPU, "XCPU"},
- {SIGXFSZ, "XFSZ"},
- {SIGVTALRM, "VTALRM"},
- {SIGPROF, "PROF"},
- {SIGWINCH, "WINCH"},
- {SIGPOLL, "POLL"},
- {SIGIO, "IO"},
- {SIGPWR, "PWR"},
- {SIGSYS, "SYS"},
- {SIGUNUSED, "UNUSED"},
- {0, NULL}
-};
-
-const char *argv0;
-
-static void
-usage(void)
-{
- fprintf(stderr, "usage: %s (signal)[(+|-)off] command [arguments]...\n", argv0);
- fprintf(stderr, "usage: %s -L\n", argv0);
- exit(FAILURE);
-}
-
-static void
-invalid_signal(void)
-{
- fprintf(stderr, "%s: invalid signal\n", argv0);
- exit(FAILURE);
-}
-
-static void
-print_signals(void)
-{
- struct sig *sig = sigs;
- for (; sig->name; sig++)
- printf("%s\n", sig->name);
- printf("RTMIN\nRTMAX\n");
-}
-
-static int
-strict_strtoi(const char *str, int min, int max)
-{
- char *end;
- long int ret;
- errno = 0;
- ret = strtol(str, &end, 10);
- if (errno || *end)
- usage();
- if (ret < min || ret > max)
- invalid_signal();
- return (int)ret;
-}
-
-static int
-get_signal(const char *str)
-{
- struct sig *sig = sigs;
- int have_prefix = 0;
- char *end;
- long int ret;
- if (!strncasecmp(str, "SIG", 3)) {
- str += 3;
- have_prefix = 1;
- }
- if (!strcasecmp(str, "RTMIN"))
- return SIGRTMIN;
- if (!strcasecmp(str, "RTMAX"))
- return SIGRTMAX;
- for (; sig->name; sig++) {
- if (!strcasecmp(str, sig->name))
- return sig->signo;
- }
- if (!have_prefix) {
- errno = 0;
- ret = strtol(str, &end, 10);
- if (!errno && !*end && 0 <= ret && ret < _NSIG)
- return (int)ret;
-
- }
- invalid_signal();
- return -1;
-}
-
-int
-main(int argc, char *argv[])
-{
- char *off;
- char sign = '\0';
- int signo;
-
- argv0 = *argv ? (argc--, *argv++) : "pdeath";
-
- if (*argv && **argv == '-') {
- if (argc == 1 && !strcmp(*argv, "-L")) {
- print_signals();
- if (fflush(stdout) || fclose(stdout)) {
- perror(argv0);
- return FAILURE;
- }
- return 0;
- }
- usage();
- }
-
- if (argc < 2)
- usage();
-
- if ((off = strpbrk(*argv, "+-"))) {
- sign = *off;
- *off++ = '\0';
- }
- signo = get_signal(*argv);
- if (sign == '-')
- signo -= strict_strtoi(off, 0, signo);
- else if (sign == '+')
- signo += strict_strtoi(off, 0, _NSIG - 1 - signo);
- argv++, argc--;
-
- if (prctl(PR_SET_PDEATHSIG, signo) == -1) {
- perror(argv0);
- return FAILURE;
- }
-
- execvp(*argv, argv);
- fprintf(stderr, "%s: %s: %s\n", argv0, strerror(errno), *argv);
- return FAILURE;
-}