[klibc] [PATCH] ln for klibc utils
Olaf Hering
olh at suse.de
Sun Feb 22 01:54:31 PST 2004
this implements a ln(1) with -f and -s support.
diff -p -purN klibc-0.112/utils/Makefile klibc-0.112.utils/utils/Makefile
--- klibc-0.112/utils/Makefile 2004-02-21 23:49:26.000000000 +0100
+++ klibc-0.112.utils/utils/Makefile 2004-02-22 01:23:17.000000000 +0100
@@ -6,7 +6,7 @@ MAKEDEPS = -Wp,-MD,.$(subst /,-,$*).
CFLAGS = $(MAKEDEPS) $(OPTFLAGS) $(REQFLAGS) -W -Wall
LIBS = $(KLIBC) $(LIBGCC)
PROGS := chroot dd fstype mkdir mkfifo mount pivot_root umount \
- true false sleep
+ true false sleep ln
STATICPROGS := $(patsubst %,static/%,$(PROGS))
SHAREDPROGS := $(patsubst %,shared/%,$(PROGS))
LIBOBJS = file_mode.o
diff -p -purN klibc-0.112/utils/ln.c klibc-0.112.utils/utils/ln.c
--- klibc-0.112/utils/ln.c 1970-01-01 01:00:00.000000000 +0100
+++ klibc-0.112.utils/utils/ln.c 2004-02-22 01:15:39.000000000 +0100
@@ -0,0 +1,84 @@
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <sys/types.h>
+#include <sys/stat.h>
+#include <unistd.h>
+
+#include <linux/limits.h>
+
+int main(int argc, char *argv[])
+{
+ int c, s, f;
+ char *p, *target;
+ struct stat sb;
+
+ s = f = 0;
+ do {
+ c = getopt(argc, argv, "sf");
+ if (c == EOF)
+ break;
+
+ switch (c) {
+
+ case 's':
+ s = 1;
+ break;
+ case 'f':
+ f = 1;
+ break;
+ case '?':
+ fprintf(stderr, "%s: invalid option -%c\n",
+ argv[0], optopt);
+ return 1;
+ }
+
+ } while (1);
+
+ if (optind == argc) {
+ fprintf(stderr, "Usage: %s [-s] [-f] target link\n",
+ argv[0]);
+ return 1;
+ }
+
+ memset(&sb, 0, sizeof(struct stat));
+ if (stat(argv[argc - 1], &sb) < 0 && argc - optind > 2) {
+ if (!(S_ISDIR(sb.st_mode))) {
+ fprintf(stderr,
+ "multiple targets and %s is not a directory\n",
+ argv[argc - 1]);
+ return 1;
+ }
+ }
+
+ target = malloc(PATH_MAX);
+ if (!target) {
+ perror("malloc");
+ return 1;
+ }
+
+ for (c = optind; c < argc - 1; c++) {
+
+ p = strrchr(argv[c], '/');
+ p++;
+
+ if (S_ISDIR(sb.st_mode))
+ snprintf(target, PATH_MAX, "%s/%s",
+ argv[argc - 1], p);
+ else
+ snprintf(target, PATH_MAX, "%s", argv[argc - 1]);
+
+ if (f)
+ unlink(target);
+
+ if (s) {
+ if (symlink(argv[c], target) == -1)
+ perror(target);
+ } else {
+ if (link(argv[c], target) == -1)
+ perror(target);
+ }
+ }
+
+ return 0;
+}
--
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