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Implement XSI extensions -signal_name and -signal_number for kill(1)

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sin 2014-11-11 15:35:27 +00:00
parent 237673302d
commit a0e9050925
1 changed files with 34 additions and 14 deletions
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48
kill.c
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@ -1,5 +1,6 @@
/* See LICENSE file for copyright and license details. */
#include <sys/wait.h>
#include <ctype.h>
#include <errno.h>
#include <signal.h>
#include <stdbool.h>
@ -47,7 +48,25 @@ main(int argc, char *argv[])
argc--;
argv++;
if (strcmp(argv[0], "-l") == 0) {
if (strcmp(argv[0], "--") == 0) {
argc--;
argv++;
if (argc == 0)
usage();
} else if (argv[0][0] == '-' && isdigit(argv[0][1])) {
/* handle XSI extension -signal_number */
errno = 0;
sig = strtol(&argv[0][1], &end, 0);
if (*end != '\0' || errno != 0)
eprintf("%d: bad signal number\n", sig);
for (i = 0; i < LEN(sigs); i++)
if (sigs[i].sig == sig || sig == 0)
break;
if (i == LEN(sigs))
eprintf("%d: bad signal number\n", sig);
argc--;
argv++;
} else if (strcmp(argv[0], "-l") == 0) {
argc--;
argv++;
if (argc == 0) {
@ -70,30 +89,31 @@ main(int argc, char *argv[])
}
}
exit(0);
} else if (strcmp(argv[0], "-s") == 0) {
argc--;
argv++;
if (argc == 0)
usage();
if (strcmp(argv[0], "0") == 0) {
} else {
if (strcmp(argv[0], "-s") == 0) {
argc--;
argv++;
if (argc == 0)
usage();
name = argv[0];
} else {
/* assume XSI extension -signal_name */
name = &argv[0][1];
}
if (strcmp(name, "0") == 0) {
sig = 0;
} else {
for (i = 0; i < LEN(sigs); i++) {
if (strcasecmp(sigs[i].name, argv[0]) == 0) {
if (strcasecmp(sigs[i].name, name) == 0) {
sig = sigs[i].sig;
break;
}
}
if (i == LEN(sigs))
eprintf("%s: bad signal number\n", argv[0]);
eprintf("%s: bad signal number\n", name);
}
argc--;
argv++;
} else if (strcmp(argv[0], "--") == 0) {
argc--;
argv++;
if (argc == 0)
usage();
}
if (argc == 0)