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authorFelix Fietkau <nbd@openwrt.org>2006-04-05 02:09:22 +0000
committerFelix Fietkau <nbd@openwrt.org>2006-04-05 02:09:22 +0000
commitee27e41337497f69d27cd689fe19ba2c89e95f79 (patch)
tree302d5239acd2ed8e10f5310599a381bb22f193e0 /openwrt/package/busybox/patches/340-lock_util.patch
parente4b534024d6dc903ef48628dda1203d0d7c5bfcb (diff)
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large init script cleanup and merge of whiterussian changes, new dnsmasq config handling
SVN-Revision: 3588
Diffstat (limited to 'openwrt/package/busybox/patches/340-lock_util.patch')
-rw-r--r--openwrt/package/busybox/patches/340-lock_util.patch167
1 files changed, 167 insertions, 0 deletions
diff --git a/openwrt/package/busybox/patches/340-lock_util.patch b/openwrt/package/busybox/patches/340-lock_util.patch
new file mode 100644
index 0000000..f5c0c2e
--- /dev/null
+++ b/openwrt/package/busybox/patches/340-lock_util.patch
@@ -0,0 +1,167 @@
+diff -urN busybox.old/include/applets.h busybox.dev/include/applets.h
+--- busybox.old/include/applets.h 2006-04-05 01:06:29.000000000 +0200
++++ busybox.dev/include/applets.h 2006-04-05 01:19:09.000000000 +0200
+@@ -167,6 +167,7 @@
+ USE_LN(APPLET(ln, ln_main, _BB_DIR_BIN, _BB_SUID_NEVER))
+ USE_LOADFONT(APPLET(loadfont, loadfont_main, _BB_DIR_USR_BIN, _BB_SUID_NEVER))
+ USE_LOADKMAP(APPLET(loadkmap, loadkmap_main, _BB_DIR_SBIN, _BB_SUID_NEVER))
++USE_LOCK(APPLET_NOUSAGE(lock, lock_main, _BB_DIR_BIN, _BB_SUID_NEVER))
+ USE_LOGGER(APPLET(logger, logger_main, _BB_DIR_USR_BIN, _BB_SUID_NEVER))
+ USE_LOGIN(APPLET(login, login_main, _BB_DIR_BIN, _BB_SUID_ALWAYS))
+ USE_LOGNAME(APPLET(logname, logname_main, _BB_DIR_USR_BIN, _BB_SUID_NEVER))
+diff -urN busybox.old/miscutils/Config.in busybox.dev/miscutils/Config.in
+--- busybox.old/miscutils/Config.in 2006-03-22 22:16:24.000000000 +0100
++++ busybox.dev/miscutils/Config.in 2006-04-05 01:07:12.000000000 +0200
+@@ -209,6 +209,12 @@
+ Enables the 'hdparm -d' option to get/set using_dma flag.
+ This is dangerous stuff, so you should probably say N.
+
++config CONFIG_LOCK
++ bool "lock"
++ default y
++ help
++ Small utility for using locks in scripts
++
+ config CONFIG_MAKEDEVS
+ bool "makedevs"
+ default n
+diff -urN busybox.old/miscutils/Makefile.in busybox.dev/miscutils/Makefile.in
+--- busybox.old/miscutils/Makefile.in 2006-03-22 22:16:24.000000000 +0100
++++ busybox.dev/miscutils/Makefile.in 2006-04-05 01:10:50.000000000 +0200
+@@ -20,6 +20,7 @@
+ MISCUTILS-$(CONFIG_EJECT) += eject.o
+ MISCUTILS-$(CONFIG_HDPARM) += hdparm.o
+ MISCUTILS-$(CONFIG_LAST) += last.o
++MISCUTILS-$(CONFIG_LOCK) += lock.o
+ MISCUTILS-${CONFIG_LESS} += less.o
+ MISCUTILS-$(CONFIG_MAKEDEVS) += makedevs.o
+ MISCUTILS-$(CONFIG_MOUNTPOINT) += mountpoint.o
+diff -urN busybox.old/miscutils/lock.c busybox.dev/miscutils/lock.c
+--- busybox.old/miscutils/lock.c 1970-01-01 01:00:00.000000000 +0100
++++ busybox.dev/miscutils/lock.c 2006-04-05 01:07:12.000000000 +0200
+@@ -0,0 +1,125 @@
++#include <sys/types.h>
++#include <sys/file.h>
++#include <sys/stat.h>
++#include <signal.h>
++#include <fcntl.h>
++#include <unistd.h>
++#include <stdio.h>
++#include "busybox.h"
++
++static int unlock = 0;
++static int shared = 0;
++static int waitonly = 0;
++static int fd;
++static char *file;
++
++static void usage(char *name)
++{
++ fprintf(stderr, "Usage: %s [-suw] <filename>\n"
++ " -s Use shared locking\n"
++ " -u Unlock\n"
++ " -w Wait for the lock to become free, don't acquire lock\n"
++ "\n", name);
++ exit(1);
++}
++
++static void exit_unlock(int sig)
++{
++ flock(fd, LOCK_UN);
++ unlink(file);
++ exit(0);
++}
++
++static int do_unlock(void)
++{
++ FILE *f;
++ int i;
++
++ f = fopen(file, "r");
++ fscanf(f, "%d", &i);
++ if (i > 0)
++ kill(i, SIGTERM);
++ fclose(f);
++
++ return 0;
++}
++
++static int do_lock(void)
++{
++ int pid;
++ char pidstr[8];
++
++ if ((fd = open(file, O_RDWR | O_CREAT, 0700)) < 0) {
++ fprintf(stderr, "Can't open %s\n", file);
++ return 1;
++ }
++
++ if (flock(fd, (shared ? LOCK_SH : LOCK_EX)) < 0) {
++ fprintf(stderr, "Can't lock %s\n", file);
++ return 1;
++ }
++
++ pid = fork();
++
++ if (pid < 0)
++ return -1;
++
++ if (pid == 0) {
++ signal(SIGKILL, exit_unlock);
++ signal(SIGTERM, exit_unlock);
++ signal(SIGINT, exit_unlock);
++ if (waitonly)
++ exit_unlock(0);
++ else
++ while (1)
++ sleep(1);
++ } else {
++ if (!waitonly) {
++ lseek(fd, 0, SEEK_SET);
++ ftruncate(fd, 0);
++ sprintf(pidstr, "%d\n", pid);
++ write(fd, pidstr, strlen(pidstr));
++ close(fd);
++ }
++
++ return 0;
++ }
++}
++
++#ifndef CONFIG_LOCK
++int main(int argc, char **argv)
++#else
++int lock_main(int argc, char **argv)
++#endif
++{
++ char **args = &argv[1];
++ int c = argc - 1;
++
++ while ((*args != NULL) && (*args)[0] == '-') {
++ char *ch = *args;
++ while (*(++ch) > 0) {
++ switch(*ch) {
++ case 'w':
++ waitonly = 1;
++ break;
++ case 's':
++ shared = 1;
++ break;
++ case 'u':
++ unlock = 1;
++ break;
++ }
++ }
++ c--;
++ args++;
++ }
++
++ if (c != 1)
++ usage(argv[0]);
++
++ file = *args;
++ if (unlock)
++ return do_unlock();
++ else
++ return do_lock();
++}