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authorRob Landley <rob@landley.net>2012-11-20 09:21:52 -0600
committerRob Landley <rob@landley.net>2012-11-20 09:21:52 -0600
commitbd2e2279d2b8f491ff9a56f6bd9000b0215778f8 (patch)
tree48d787551e5525e4cc173045e3ce8b3ab5a50031 /toys/other
parentdb0fff3f849097a20641a15a8f39e5ea67402e9b (diff)
downloadtoybox-bd2e2279d2b8f491ff9a56f6bd9000b0215778f8.tar.gz
Update readlink so -f works. Add -menq while there.
Diffstat (limited to 'toys/other')
-rw-r--r--toys/other/readlink.c34
1 files changed, 20 insertions, 14 deletions
diff --git a/toys/other/readlink.c b/toys/other/readlink.c
index b7f77f91..b237a510 100644
--- a/toys/other/readlink.c
+++ b/toys/other/readlink.c
@@ -2,27 +2,26 @@
*
* Copyright 2007 Rob Landley <rob@landley.net>
-USE_READLINK(NEWTOY(readlink, "<1f", TOYFLAG_BIN))
+USE_READLINK(NEWTOY(readlink, "<1>1femnq[-fem]", TOYFLAG_BIN))
config READLINK
bool "readlink"
default n
help
- usage: readlink
+ usage: readlink FILE
- Show what a symbolic link points to.
+ With no options, show what symlink points to, return error if not symlink.
-config READLINK_F
- bool "readlink -f"
- default n
- depends on READLINK
- help
- usage: readlink [-f]
+ Options for producing cannonical paths (all symlinks/./.. resolved):
- -f Show full cannonical path, with no symlinks in it. Returns
- nonzero if nothing could currently exist at this location.
+ -e cannonical path to existing file (fail if does not exist)
+ -f cannonical path to creatable file (fail if directory does not exist)
+ -m cannonical path
+ -n no trailing newline
+ -q quiet (no output, just error code)
*/
+#define FOR_readlink
#include "toys.h"
void readlink_main(void)
@@ -31,11 +30,18 @@ void readlink_main(void)
// Calculating full cannonical path?
- if (CFG_READLINK_F && toys.optflags) s = xrealpath(*toys.optargs);
- else s = xreadlink(*toys.optargs);
+ if (toys.optflags & (FLAG_f|FLAG_e|FLAG_m)) {
+ unsigned u = 0;
+
+ if (toys.optflags & FLAG_f) u++;
+ if (toys.optflags & FLAG_m) u=999999999;
+
+ s = xabspath(*toys.optargs, u);
+ } else s = xreadlink(*toys.optargs);
if (s) {
- xputs(s);
+ if (!(toys.optflags & FLAG_q))
+ xprintf((toys.optflags & FLAG_n) ? "%s" : "%s\n", s);
if (CFG_TOYBOX_FREE) free(s);
} else toys.exitval = 1;
}