Mercurial > hg > toybox
view toys/readlink.c @ 543:60b97ba66a70
Extensive semi-gratuitous refactoring: factor out common code, handle euid!=uid and egid!=gid cases. (Note: test suite requires root access, possibly container support.)
author | Rob Landley <rob@landley.net> |
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date | Mon, 12 Mar 2012 23:00:28 -0500 |
parents | 163498bf547b |
children | 82ffae226c40 |
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/* vi: set sw=4 ts=4: * * readlink.c - Return string representation of a symbolic link. * * Copyright 2007 Rob Landley <rob@landley.net> * * Not in SUSv3. USE_READLINK(NEWTOY(readlink, "<1f", TOYFLAG_BIN)) config READLINK bool "readlink" default n help usage: readlink Show what a symbolic link points to. config READLINK_F bool "readlink -f" default n depends on READLINK help usage: readlink [-f] -f Show full cannonical path, with no symlinks in it. Returns nonzero if nothing could currently exist at this location. */ #include "toys.h" void readlink_main(void) { char *s; // Calculating full cannonical path? if (CFG_READLINK_F && toys.optflags) s = realpath(*toys.optargs, NULL); else s = xreadlink(*toys.optargs); if (s) { xputs(s); if (CFG_TOYBOX_FREE) free(s); } else toys.exitval = 1; }