diff options
Diffstat (limited to 'packages/busybox/busybox-1.01/udhcppidfile.patch')
| -rw-r--r-- | packages/busybox/busybox-1.01/udhcppidfile.patch | 276 |
1 files changed, 0 insertions, 276 deletions
diff --git a/packages/busybox/busybox-1.01/udhcppidfile.patch b/packages/busybox/busybox-1.01/udhcppidfile.patch deleted file mode 100644 index fb2b2ec19a..0000000000 --- a/packages/busybox/busybox-1.01/udhcppidfile.patch +++ /dev/null @@ -1,276 +0,0 @@ ---- busybox-1.00/networking/udhcp/pidfile.h-dist 2004-04-15 03:51:26.000000000 +1000 -+++ busybox-1.00/networking/udhcp/pidfile.h 2004-10-27 15:46:38.000000000 +1000 -@@ -21,5 +21,5 @@ - - - int pidfile_acquire(const char *pidfile); --void pidfile_write_release(int pid_fd); -+int pidfile_reassign(const char *pidfile, int newpid); - ---- busybox-1.00/networking/udhcp/pidfile.c-dist 2004-04-15 03:51:25.000000000 +1000 -+++ busybox-1.00/networking/udhcp/pidfile.c 2004-10-27 19:43:40.000000000 +1000 -@@ -25,6 +25,7 @@ - #include <unistd.h> - #include <stdio.h> - #include <stdlib.h> -+#include <errno.h> - - #include "pidfile.h" - #include "common.h" -@@ -37,39 +38,146 @@ - } - - --int pidfile_acquire(const char *pidfile) -+static int pidfile_open(const char *pidfile) - { -- int pid_fd; -- if (!pidfile) return -1; -+ int fd; - -- pid_fd = open(pidfile, O_CREAT | O_WRONLY, 0644); -- if (pid_fd < 0) { -- LOG(LOG_ERR, "Unable to open pidfile %s: %m\n", pidfile); -- } else { -- lockf(pid_fd, F_LOCK, 0); -- if (!saved_pidfile) -- atexit(pidfile_delete); -- saved_pidfile = (char *) pidfile; -+ if ((fd = open(pidfile, O_CREAT | O_RDWR, 0644)) < 0) { -+ LOG(LOG_ERR, "pidfile_open: open %s failed: %m\n", pidfile); -+ return (-1); -+ } -+ -+ /* NOTE: lockf is not inherited by child after fork */ -+ if (lockf(fd, F_LOCK, 0) < 0) { -+ LOG(LOG_ERR, "pidfile_open: lock %s failed: %m\n", pidfile); -+ close(fd); -+ return (-1); -+ } -+ -+ return (fd); -+} -+ -+ -+static int pidfile_check(int fd, const char *pidfile) -+{ -+ int len, pid; -+ char buf[20]; -+ -+ if (lseek(fd, 0L, SEEK_SET) < 0) { -+ LOG(LOG_ERR, "pidfile_check: lseek %s failed: %m\n", pidfile); -+ return (-1); -+ } -+ -+ if ((len = read(fd, buf, sizeof buf - 1)) < 0) { -+ LOG(LOG_ERR, "pidfile_check: read %s failed: %m\n", pidfile); -+ return (-1); -+ } -+ -+ if (len == 0) -+ return (0); -+ -+ buf[len] = '\0'; -+ -+ if ((pid = atoi(buf)) <= 1) { -+ LOG(LOG_WARNING, -+ "pidfile_check: ignoring bogus pid (%s) in %s\n", -+ buf, pidfile); -+ return (0); -+ } -+ -+ if (kill((pid_t)pid, 0) == 0) { -+ LOG(LOG_ERR, "pidfile_check: process %d exists (%s)\n", -+ pid, pidfile); -+ return (-1); -+ } -+ -+ if (errno != ESRCH) { -+ LOG(LOG_ERR, "pidfile_check: kill %d failed (%s): %m\n", -+ pid, pidfile); -+ return (-1); -+ } -+ -+ return (0); -+} -+ -+ -+static int pidfile_store(int fd, const char *pidfile, int pid) -+{ -+ int len; -+ char buf[20]; -+ -+ if (lseek(fd, 0L, SEEK_SET) < 0) { -+ LOG(LOG_ERR, "pidfile_store: lseek %s failed: %m\n", pidfile); -+ return (-1); -+ } -+ -+ len = snprintf(buf, sizeof buf - 1, "%d\n", pid); -+ buf[len] = '\0'; -+ -+ if (write(fd, buf, len) < 0) { -+ LOG(LOG_ERR, "pidfile_store: write %s failed: %m\n", -+ pidfile); -+ return (-1); -+ } -+ -+ if (ftruncate(fd, len) < 0) { -+ LOG(LOG_ERR, "pidfile_store: ftruncate %d failed (%s): %m\n", -+ len, pidfile); -+ return (-1); - } - -- return pid_fd; -+ return (0); - } - - --void pidfile_write_release(int pid_fd) -+static void pidfile_close(int fd) - { -- FILE *out; -+ (void)lseek(fd, 0L, SEEK_SET); -+ (void)lockf(fd, F_ULOCK, 0); -+ (void)close(fd); -+} - -- if (pid_fd < 0) return; - -- if ((out = fdopen(pid_fd, "w")) != NULL) { -- fprintf(out, "%d\n", getpid()); -- fclose(out); -+int pidfile_acquire(const char *pidfile) -+{ -+ int fd, result; -+ if (!pidfile) return (-1); -+ -+ if ((fd = pidfile_open(pidfile)) < 0) -+ return (-1); -+ -+ if ((result = pidfile_check(fd, pidfile)) == 0) -+ result = pidfile_store(fd, pidfile, getpid()); -+ -+ pidfile_close(fd); -+ -+ if (result == 0) { -+ saved_pidfile = (char *) pidfile; -+ atexit(pidfile_delete); - } -- lockf(pid_fd, F_UNLCK, 0); -- close(pid_fd); -+ -+ return (result); - } - - -+/* -+ * reassign the pid in a pidfile - used just after a fork so a parent -+ * can store the pid of its child into the file without any window -+ * where the pid in the file is a dead process (which might let another -+ * instance of the program start). Note the parent must use _exit() to -+ * avoid triggering the unlink scheduled above in pidfile_acquire() -+ */ -+int pidfile_reassign(const char *pidfile, int pid) -+{ -+ int fd, result; -+ if (!pidfile) return (-1); -+ -+ if ((fd = pidfile_open(pidfile)) < 0) -+ return (-1); - -+ result = pidfile_store(fd, pidfile, pid); - -+ pidfile_close(fd); -+ -+ return (result); -+} ---- busybox-1.00/networking/udhcp/common.c-dist 2004-05-19 19:18:04.000000000 +1000 -+++ busybox-1.00/networking/udhcp/common.c 2004-10-27 19:58:10.000000000 +1000 -@@ -64,16 +64,34 @@ - #ifdef __uClinux__ - LOG(LOG_ERR, "Cannot background in uclinux (yet)"); - #else /* __uClinux__ */ -- int pid_fd; -+ int pid, fd; - -- /* hold lock during fork. */ -- pid_fd = pidfile_acquire(pidfile); -- if (daemon(0, 0) == -1) { -+ /* NOTE: lockf is not inherited by the child after fork */ -+ if ((pid = fork()) < 0) { - perror("fork"); - exit(1); - } -+ -+ if (pid > 0) { -+ /* parent */ -+ if (pidfile_reassign(pidfile, pid) < 0) { -+ (void)kill(pid, SIGKILL); -+ exit(1); -+ } else -+ _exit(0); -+ } -+ -+ /* child */ -+ (void)chdir("/"); -+ if ((fd = open("/dev/null", O_RDWR)) >= 0) { -+ (void)dup2(fd, 0); -+ (void)dup2(fd, 1); -+ (void)dup2(fd, 2); -+ (void)close(fd); -+ } -+ (void)setsid(); -+ - daemonized++; -- pidfile_write_release(pid_fd); - #endif /* __uClinux__ */ - } - -@@ -97,14 +115,12 @@ - - void start_log_and_pid(const char *client_server, const char *pidfile) - { -- int pid_fd; -- - /* Make sure our syslog fd isn't overwritten */ - sanitize_fds(); - - /* do some other misc startup stuff while we are here to save bytes */ -- pid_fd = pidfile_acquire(pidfile); -- pidfile_write_release(pid_fd); -+ if (pidfile_acquire(pidfile) < 0) -+ exit(1); - - /* equivelent of doing a fflush after every \n */ - setlinebuf(stdout); -@@ -150,8 +166,8 @@ - sanitize_fds(); - - /* do some other misc startup stuff while we are here to save bytes */ -- pid_fd = pidfile_acquire(pidfile); -- pidfile_write_release(pid_fd); -+ if (pidfile_acquire(pidfile) < 0) -+ exit(1); - - /* equivelent of doing a fflush after every \n */ - setlinebuf(stdout); ---- busybox-1.00/networking/udhcp/common.h-dist 2004-05-19 18:29:05.000000000 +1000 -+++ busybox-1.00/networking/udhcp/common.h 2004-10-27 15:10:16.000000000 +1000 -@@ -42,7 +42,6 @@ - long uptime(void); - void background(const char *pidfile); - void start_log_and_pid(const char *client_server, const char *pidfile); --void background(const char *pidfile); - void udhcp_logging(int level, const char *fmt, ...); - - #define LOG(level, str, args...) udhcp_logging(level, str, ## args) ---- busybox-1.00/networking/udhcp/script.c-dist 2004-05-19 17:45:47.000000000 +1000 -+++ busybox-1.00/networking/udhcp/script.c 2004-10-27 15:54:04.000000000 +1000 -@@ -228,6 +228,6 @@ - execle(client_config.script, client_config.script, - name, NULL, envp); - LOG(LOG_ERR, "script %s failed: %m", client_config.script); -- exit(1); -+ _exit(1); - } - } |