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| author | Glenn L McGrath <bug1@ihug.co.nz> | 2003-05-11 14:52:39 +0000 |
|---|---|---|
| committer | Glenn L McGrath <bug1@ihug.co.nz> | 2003-05-11 14:52:39 +0000 |
| commit | 1e11c34be4decfef8fbda8a8e01cd60def8232e5 (patch) | |
| tree | 6e93956fef2bcd4c1db18031dc081dcaf689f2d1 /init/pidfilehack.c | |
| parent | 8c6887c855460ee9e688e2a51e29f99faa2a2d8c (diff) | |
| download | busybox-w32-1e11c34be4decfef8fbda8a8e01cd60def8232e5.tar.gz busybox-w32-1e11c34be4decfef8fbda8a8e01cd60def8232e5.tar.bz2 busybox-w32-1e11c34be4decfef8fbda8a8e01cd60def8232e5.zip | |
minit, a Minimal init system.
Diffstat (limited to '')
| -rw-r--r-- | init/pidfilehack.c | 78 |
1 files changed, 78 insertions, 0 deletions
diff --git a/init/pidfilehack.c b/init/pidfilehack.c new file mode 100644 index 000000000..a2d905b55 --- /dev/null +++ b/init/pidfilehack.c | |||
| @@ -0,0 +1,78 @@ | |||
| 1 | /* | ||
| 2 | * minit version 0.9.1 by Felix von Leitner | ||
| 3 | * ported to busybox by Glenn McGrath <bug1@optushome.com.au> | ||
| 4 | * | ||
| 5 | * This program is free software; you can redistribute it and/or modify | ||
| 6 | * it under the terms of the GNU General Public License as published by | ||
| 7 | * the Free Software Foundation; either version 2 of the License, or | ||
| 8 | * (at your option) any later version. | ||
| 9 | * | ||
| 10 | * This program is distributed in the hope that it will be useful, | ||
| 11 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | ||
| 12 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | ||
| 13 | * GNU General Public License for more details. | ||
| 14 | * | ||
| 15 | * You should have received a copy of the GNU General Public License | ||
| 16 | * along with this program; if not, write to the Free Software | ||
| 17 | * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. | ||
| 18 | */ | ||
| 19 | |||
| 20 | #include <unistd.h> | ||
| 21 | #include <errno.h> | ||
| 22 | #include <stdlib.h> | ||
| 23 | #include <sys/fcntl.h> | ||
| 24 | |||
| 25 | #include "busybox.h" | ||
| 26 | /* purpose: argv[1] is the full path to a PID file, | ||
| 27 | * argv+2 is the daemon to run. | ||
| 28 | * the daemon is expected to fork in the background and write its PID in | ||
| 29 | * the pid file. | ||
| 30 | */ | ||
| 31 | |||
| 32 | extern int pidfilehack_main(int argc, char **argv) | ||
| 33 | { | ||
| 34 | int count = 0; | ||
| 35 | |||
| 36 | if (argc < 3) { | ||
| 37 | bb_show_usage(); | ||
| 38 | |||
| 39 | } | ||
| 40 | if (unlink(argv[2]) && (errno != ENOENT)) { | ||
| 41 | bb_perror_msg("could not remove pid file"); | ||
| 42 | } | ||
| 43 | switch (fork()) { | ||
| 44 | case -1: | ||
| 45 | bb_perror_msg("could not fork"); | ||
| 46 | return 2; | ||
| 47 | case 0: /* child */ | ||
| 48 | execv(argv[3], argv + 3); | ||
| 49 | bb_perror_msg("execvp failed"); | ||
| 50 | return 3; | ||
| 51 | } | ||
| 52 | do { | ||
| 53 | int fd = open(argv[2], O_RDONLY); | ||
| 54 | |||
| 55 | if (fd >= 0) { | ||
| 56 | static char buf[100] = "-P"; | ||
| 57 | int len = read(fd, buf + 2, 100); | ||
| 58 | |||
| 59 | close(fd); | ||
| 60 | if (len > 0) { | ||
| 61 | char *_argv[] = { "msvc", 0, 0, 0 }; | ||
| 62 | if (buf[len + 1] == '\n') { | ||
| 63 | buf[len + 1] = 0; | ||
| 64 | } else { | ||
| 65 | buf[len + 2] = 0; | ||
| 66 | } | ||
| 67 | _argv[1] = buf; | ||
| 68 | _argv[2] = argv[1]; | ||
| 69 | execvp(_argv[0], _argv); | ||
| 70 | bb_perror_msg("execvp failed"); | ||
| 71 | return 0; | ||
| 72 | } | ||
| 73 | } | ||
| 74 | sleep(1); | ||
| 75 | } while (++count < 30); | ||
| 76 | |||
| 77 | return(0); | ||
| 78 | } | ||