X-Git-Url: https://www.chiark.greenend.org.uk/ucgi/~ianmdlvl/git?a=blobdiff_plain;f=udev_utils_run.c;h=e1e775ebe6f2a5f03964aba8d5db86375a24d4bd;hb=d69b2203c37d32bbfbd81153a1fc99b55b7b6cbb;hp=1315154c2678c27d9c869fe3fdc2100b0aad6764;hpb=f1ff8d7b4ad1f95385d42c3fa1b2a997b9e6d5f5;p=elogind.git

diff --git a/udev_utils_run.c b/udev_utils_run.c
index 1315154c2..e1e775ebe 100644
--- a/udev_utils_run.c
+++ b/udev_utils_run.c
@@ -82,6 +82,7 @@ int run_program(const char *command, const char *subsystem,
 	int errpipe[2] = {-1, -1};
 	pid_t pid;
 	char arg[PATH_SIZE];
+	char program[PATH_SIZE];
 	char *argv[(sizeof(arg) / 2) + 1];
 	int devnull;
 	int i;
@@ -115,17 +116,24 @@ int run_program(const char *command, const char *subsystem,
 	/* prepare pipes from child to parent */
 	if (result || log) {
 		if (pipe(outpipe) != 0) {
-			err("pipe failed");
+			err("pipe failed: %s", strerror(errno));
 			return -1;
 		}
 	}
 	if (log) {
 		if (pipe(errpipe) != 0) {
-			err("pipe failed");
+			err("pipe failed: %s", strerror(errno));
 			return -1;
 		}
 	}
 
+	/* allow programs in /lib/udev called without the path */
+	if (strchr(argv[0], '/') == NULL) {
+		strlcpy(program, "/lib/udev/", sizeof(program));
+		strlcat(program, argv[0], sizeof(program));
+		argv[0] = program;
+	}
+
 	pid = fork();
 	switch(pid) {
 	case 0:
@@ -145,7 +153,7 @@ int run_program(const char *command, const char *subsystem,
 				dup2(devnull, STDERR_FILENO);
 			close(devnull);
 		} else
-			err("open /dev/null failed");
+			err("open /dev/null failed: %s", strerror(errno));
 		if (outpipe[WRITE_END] > 0)
 			dup2(outpipe[WRITE_END], STDOUT_FILENO);
 		if (errpipe[WRITE_END] > 0)
@@ -156,7 +164,7 @@ int run_program(const char *command, const char *subsystem,
 		err("exec of program '%s' failed", argv[0]);
 		_exit(1);
 	case -1:
-		err("fork of '%s' failed", argv[0]);
+		err("fork of '%s' failed: %s", argv[0], strerror(errno));
 		return -1;
 	default:
 		/* read from child if requested */
@@ -199,7 +207,7 @@ int run_program(const char *command, const char *subsystem,
 						close(outpipe[READ_END]);
 						outpipe[READ_END] = -1;
 						if (count < 0) {
-							err("stdin read failed with '%s'", strerror(errno));
+							err("stdin read failed: %s", strerror(errno));
 							retval = -1;
 						}
 						continue;
@@ -233,7 +241,7 @@ int run_program(const char *command, const char *subsystem,
 						close(errpipe[READ_END]);
 						errpipe[READ_END] = -1;
 						if (count < 0)
-							err("stderr read failed with '%s'", strerror(errno));
+							err("stderr read failed: %s", strerror(errno));
 						continue;
 					}
 					errbuf[count] = '\0';