Closing bug 730. libbb run_parts is using scandir (a GNUism),

and it is used only by run_parts applet, so move it there.
Also saved ~30 bytes (prolly gcc autoinlining...).

4 files changed, 99 insertions, 129 deletions

diff --git a/debianutils/run_parts.c b/debianutils/run_parts.c
index f2d90b6..448fe80 100644
--- a/debianutils/run_parts.c
+++ b/debianutils/run_parts.c
@@ -37,17 +37,108 @@
 
 #include "busybox.h"
 #include <getopt.h>
-#include <stdlib.h>
-
 
 static const struct option runparts_long_options[] = {
-	{ "test",		0,		NULL,		't' },
-	{ "umask",		1,		NULL,		'u' },
-	{ "arg",		1,		NULL,		'a' },
-	{ 0,			0,		0,			0 }
+	{ "test",       0,      NULL,   't' },
+	{ "umask",      1,      NULL,   'u' },
+	{ "arg",        1,      NULL,   'a' },
+	{ 0,            0,      0,      0   }
 };
 
-extern char **environ;
+/* valid_name */
+/* True or false? Is this a valid filename (upper/lower alpha, digits,
+ * underscores, and hyphens only?)
+ */
+static int valid_name(const struct dirent *d)
+{
+	const char *c = d->d_name;
+
+	while (*c) {
+		if (!isalnum(*c) && (*c != '_') && (*c != '-')) {
+			return 0;
+		}
+		++c;
+	}
+	return 1;
+}
+
+/* test mode = 1 is the same as official run_parts
+ * test_mode = 2 means to fail silently on missing directories
+ */
+static int run_parts(char **args, const unsigned char test_mode)
+{
+	struct dirent **namelist = 0;
+	struct stat st;
+	char *filename;
+	char *arg0 = args[0];
+	int entries;
+	int i;
+	int exitstatus = 0;
+
+#if __GNUC__
+	/* Avoid longjmp clobbering */
+	(void) &i;
+	(void) &exitstatus;
+#endif
+	/* scandir() isn't POSIX, but it makes things easy. */
+	entries = scandir(arg0, &namelist, valid_name, alphasort);
+
+	if (entries == -1) {
+		if (test_mode & 2) {
+			return(2);
+		}
+		bb_perror_msg_and_die("cannot open '%s'", arg0);
+	}
+
+	for (i = 0; i < entries; i++) {
+		filename = concat_path_file(arg0, namelist[i]->d_name);
+
+		xstat(filename, &st);
+		if (S_ISREG(st.st_mode) && !access(filename, X_OK)) {
+			if (test_mode) {
+				puts(filename);
+			} else {
+				/* exec_errno is common vfork variable */
+				volatile int exec_errno = 0;
+				int result;
+				int pid;
+
+				if ((pid = vfork()) < 0) {
+					bb_perror_msg_and_die("failed to fork");
+				} else if (!pid) {
+					args[0] = filename;
+					execve(filename, args, environ);
+					exec_errno = errno;
+					_exit(1);
+				}
+
+				waitpid(pid, &result, 0);
+				if (exec_errno) {
+					errno = exec_errno;
+					bb_perror_msg("failed to exec %s", filename);
+					exitstatus = 1;
+				}
+				if (WIFEXITED(result) && WEXITSTATUS(result)) {
+					bb_perror_msg("%s exited with return code %d", filename, WEXITSTATUS(result));
+					exitstatus = 1;
+				} else if (WIFSIGNALED(result)) {
+					bb_perror_msg("%s exited because of uncaught signal %d", filename, WTERMSIG(result));
+					exitstatus = 1;
+				}
+			}
+		} else if (!S_ISDIR(st.st_mode)) {
+			bb_error_msg("component %s is not an executable plain file", filename);
+			exitstatus = 1;
+		}
+
+		free(namelist[i]);
+		free(filename);
+	}
+	free(namelist);
+
+	return exitstatus;
+}
+
 
 /* run_parts_main */
 /* Process options */
@@ -96,5 +187,5 @@ int run_parts_main(int argc, char **argv)
 	args[0] = argv[optind];
 	args[argcount] = 0;
 
-	return(run_parts(args, test_mode, environ));
+	return run_parts(args, test_mode);
 }
diff --git a/include/libbb.h b/include/libbb.h
index 61e3794..e930312 100644
--- a/include/libbb.h
+++ b/include/libbb.h
@@ -449,7 +449,6 @@ extern void run_shell(const char *shell, int loginshell, const char *command, co
 extern void renew_current_security_context(void);
 extern void set_current_security_context(security_context_t sid);
 #endif
-extern int run_parts(char **args, const unsigned char test_mode, char **env);
 extern int restricted_shell(const char *shell);
 extern void setup_environment(const char *shell, int loginshell, int changeenv, const struct passwd *pw);
 extern int correct_password(const struct passwd *pw);
diff --git a/libbb/Kbuild b/libbb/Kbuild
index 1ddec9a..550723c 100644
--- a/libbb/Kbuild
+++ b/libbb/Kbuild
@@ -65,7 +65,6 @@ lib-y += read.o
 lib-y += recursive_action.o
 lib-y += remove_file.o
 lib-y += restricted_shell.o
-lib-y += run_parts.o
 lib-y += run_shell.o
 lib-y += safe_strncpy.o
 lib-y += safe_strtol.o
diff --git a/libbb/run_parts.c b/libbb/run_parts.c
deleted file mode 100644
index fae9181..0000000
--- a/libbb/run_parts.c
+++ /dev/null
@@ -1,119 +0,0 @@
-/* vi: set sw=4 ts=4: */
-/*
- * run command from specified directory
- *
- *
- * Copyright (C) 2001 by Emanuele Aina <emanuele.aina@tiscali.it>
- * rewrite to vfork usage by
- * Copyright (C) 2002 by Vladimir Oleynik <dzo@simtreas.ru>
- *
- * Licensed under GPLv2 or later, see file LICENSE in this tarball for details.
- */
-
-
-#include <sys/types.h>
-#include <sys/wait.h>
-#include <stdlib.h>
-#include <dirent.h>
-#include <unistd.h>
-#include <ctype.h>
-#include <errno.h>
-
-#include "libbb.h"
-
-/* valid_name */
-/* True or false? Is this a valid filename (upper/lower alpha, digits,
- * underscores, and hyphens only?)
- */
-static int valid_name(const struct dirent *d)
-{
-	const char *c = d->d_name;
-
-	while (*c) {
-		if (!isalnum(*c) && (*c != '_') && (*c != '-')) {
-			return 0;
-		}
-		++c;
-	}
-	return 1;
-}
-
-/* test mode = 1 is the same as official run_parts
- * test_mode = 2 means to fail silently on missing directories
- */
-
-int run_parts(char **args, const unsigned char test_mode, char **env)
-{
-	struct dirent **namelist = 0;
-	struct stat st;
-	char *filename;
-	char *arg0 = args[0];
-	int entries;
-	int i;
-	int exitstatus = 0;
-
-#if __GNUC__
-	/* Avoid longjmp clobbering */
-	(void) &i;
-	(void) &exitstatus;
-#endif
-	/* scandir() isn't POSIX, but it makes things easy. */
-	entries = scandir(arg0, &namelist, valid_name, alphasort);
-
-	if (entries == -1) {
-		if (test_mode & 2) {
-			return(2);
-		}
-		bb_perror_msg_and_die("cannot open '%s'", arg0);
-	}
-
-	for (i = 0; i < entries; i++) {
-
-		filename = concat_path_file(arg0, namelist[i]->d_name);
-
-		xstat(filename, &st);
-		if (S_ISREG(st.st_mode) && !access(filename, X_OK)) {
-			if (test_mode) {
-				puts(filename);
-			} else {
-				/* exec_errno is common vfork variable */
-				volatile int exec_errno = 0;
-				int result;
-				int pid;
-
-				if ((pid = vfork()) < 0) {
-					bb_perror_msg_and_die("failed to fork");
-				} else if (!pid) {
-					args[0] = filename;
-					execve(filename, args, env);
-					exec_errno = errno;
-					_exit(1);
-				}
-
-				waitpid(pid, &result, 0);
-				if(exec_errno) {
-					errno = exec_errno;
-					bb_perror_msg("failed to exec %s", filename);
-					exitstatus = 1;
-				}
-				if (WIFEXITED(result) && WEXITSTATUS(result)) {
-					bb_perror_msg("%s exited with return code %d", filename, WEXITSTATUS(result));
-					exitstatus = 1;
-				} else if (WIFSIGNALED(result)) {
-					bb_perror_msg("%s exited because of uncaught signal %d", filename, WTERMSIG(result));
-					exitstatus = 1;
-				}
-			}
-		}
-		else if (!S_ISDIR(st.st_mode)) {
-			bb_error_msg("component %s is not an executable plain file", filename);
-			exitstatus = 1;
-		}
-
-		free(namelist[i]);
-		free(filename);
-	}
-	free(namelist);
-
-	return(exitstatus);
-}