Mercurial > hg > toybox
view toys/other/readlink.c @ 889:270e5aab9998
Fix xabspath when last path component exists but we haven't got permissions to open it (ala readlink -f /dev/sda as a normal user). Spotted by Ashwini Sharma.
author | Rob Landley <rob@landley.net> |
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date | Mon, 29 Apr 2013 12:30:28 -0500 |
parents | 0027cfa330da |
children | 57f2a26fa92c |
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/* readlink.c - Return string representation of a symbolic link. * * Copyright 2007 Rob Landley <rob@landley.net> USE_READLINK(NEWTOY(readlink, "<1>1fenq[-fe]", TOYFLAG_BIN)) config READLINK bool "readlink" default y help usage: readlink FILE With no options, show what symlink points to, return error if not symlink. Options for producing cannonical paths (all symlinks/./.. resolved): -e cannonical path to existing entry (fail if missing) -f full path (fail if directory missing) -n no trailing newline -q quiet (no output, just error code) */ #define FOR_readlink #include "toys.h" void readlink_main(void) { char *s; // Calculating full cannonical path? if (toys.optflags & (FLAG_f|FLAG_e)) s = xabspath(*toys.optargs, toys.optflags & FLAG_e); else s = xreadlink(*toys.optargs); if (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; }