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authorEric Andersen1999-10-05 16:24:54 +0000
committerEric Andersen1999-10-05 16:24:54 +0000
commitcc8ed39b240180b58810784f844e253263594ac3 (patch)
tree15feebbb4be9a9168209609f48f0b100f9364420 /ln.c
downloadbusybox-cc8ed39b240180b58810784f844e253263594ac3.zip
busybox-cc8ed39b240180b58810784f844e253263594ac3.tar.gz
Initial revision0_29alpha2
Diffstat (limited to 'ln.c')
-rw-r--r--ln.c52
1 files changed, 52 insertions, 0 deletions
diff --git a/ln.c b/ln.c
new file mode 100644
index 0000000..3e87b57
--- /dev/null
+++ b/ln.c
@@ -0,0 +1,52 @@
+#include "internal.h"
+#include <stdio.h>
+#include <sys/stat.h>
+#include <sys/param.h>
+#include <errno.h>
+
+const char ln_usage[] = "ln [-s] [-f] original-name additional-name\n"
+"\n"
+"\tAdd a new name that refers to the same file as \"original-name\"\n"
+"\n"
+"\t-s:\tUse a \"symbolic\" link, instead of a \"hard\" link.\n"
+"\t-f:\tRemove existing destination files.\n";
+
+int
+ln_fn(const struct FileInfo * i)
+{
+ int status = 0;
+ char d[PATH_MAX];
+ const char * destination = i->destination;
+
+ if ( !i->makeSymbolicLink && (i->stat.st_mode & S_IFMT) == S_IFDIR ) {
+ fprintf(stderr, "Please use \"ln -s\" to link directories.\n");
+ return 1;
+ }
+
+ /*
+ * If the destination is a directory, create a file within it.
+ */
+ if ( is_a_directory(i->destination) ) {
+ destination = join_paths(
+ d
+ ,i->destination
+ ,&i->source[i->directoryLength]);
+ }
+
+ if ( i->force )
+ status = ( unlink(destination) && errno != ENOENT );
+
+ if ( status == 0 ) {
+ if ( i->makeSymbolicLink )
+ status = symlink(i->source, destination);
+ else
+ status = link(i->source, destination);
+ }
+
+ if ( status != 0 ) {
+ name_and_error(destination);
+ return 1;
+ }
+ else
+ return 0;
+}