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init/servicecmd/disable.c
David Oberhollenzer 9a88f7da45 Initial commit
Signed-off-by: David Oberhollenzer <david.oberhollenzer@tele2.at>
2018-03-24 17:04:20 +01:00

75 lines
1.5 KiB
C

#include <sys/types.h>
#include <sys/stat.h>
#include <stdlib.h>
#include <unistd.h>
#include <string.h>
#include <stdio.h>
#include <errno.h>
#include "servicecmd.h"
static int cmd_disable(int argc, char **argv)
{
int ret = EXIT_FAILURE;
char *linkname, *ptr;
struct stat sb;
if (argc < 2 || argc > 3) {
fputs("Wrong number of arguments for `disable'.\n"
"Try `service help disable' for more information.\n",
stderr);
return EXIT_FAILURE;
}
for (ptr = argv[1]; isalnum(*ptr) || *ptr == '_'; ++ptr)
;
if (*ptr != '\0') {
fprintf(stderr, "Invalid service name '%s'\n", argv[1]);
return EXIT_FAILURE;
}
if (argc == 3) {
ret = asprintf(&linkname, "%s/%s@%s",
SVCDIR, argv[1], argv[2]);
} else {
ret = asprintf(&linkname, "%s/%s", SVCDIR, argv[1]);
}
if (ret < 0) {
perror("asprintf");
return EXIT_FAILURE;
}
if (lstat(linkname, &sb)) {
fprintf(stderr, "lstat %s: %s\n", linkname, strerror(errno));
goto out;
}
if ((sb.st_mode & S_IFMT) != S_IFLNK) {
fprintf(stderr, "error: '%s' is not a symlink!", linkname);
goto out;
}
if (unlink(linkname)) {
fprintf(stderr, "removing %s: %s\n",
linkname, strerror(errno));
goto out;
}
ret = EXIT_SUCCESS;
out:
free(linkname);
return ret;
}
static command_t disable = {
.cmd = "disable",
.usage = "<name> [argument]",
.s_desc = "disable a service",
.l_desc = "This disables a service by removing the coresponding "
"symlink in " SVCDIR ".",
.run_cmd = cmd_disable,
};
REGISTER_COMMAND(disable)