areadlink.c

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/home/opencoverage/opencoverage/guest-scripts/coreutils/src/gnulib/lib/areadlink.c

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/* areadlink.c -- readlink wrapper to return the link name in malloc'd storage

Unlike xreadlink and xreadlink_with_size, don't ever call exit.

This program is free software: you can redistribute it and/or modify

it under the terms of the GNU General Public License as published by

the Free Software Foundation; either version 3 of the License, or

(at your option) any later version.

This program is distributed in the hope that it will be useful,

but WITHOUT ANY WARRANTY; without even the implied warranty of

MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the

GNU General Public License for more details.

You should have received a copy of the GNU General Public License

along with this program. If not, see <https://www.gnu.org/licenses/>. */

/* Written by Jim Meyering <jim@meyering.net>

and Bruno Haible <bruno@clisp.org>. */

#include <config.h>

/* Specification. */

#include "areadlink.h"

#include "careadlinkat.h"

#include <stdlib.h>

#include <unistd.h>

/* Get the symbolic link value of FILENAME and put it into BUFFER, with

size BUFFER_SIZE. This function acts like readlink but has

readlinkat's signature. */

static ssize_t

careadlinkatcwd (int fd, char const *filename, char *buffer,

size_t buffer_size)

{

/* FD must be AT_FDCWD here, otherwise the caller is using this

function in contexts it was not meant for. */

if (fd != AT_FDCWD)

fd != -100	Description
TRUE	never evaluated
FALSE	evaluated 2 times by 1 test Evaluated by: stdbuf

0-2

abort ();

never executed: abort ();

return readlink (filename, buffer, buffer_size);

executed 2 times by 1 test: return readlink (filename, buffer, buffer_size);

Executed by:

stdbuf

}

/* Call readlink to get the symbolic link value of FILENAME.

Return a pointer to that NUL-terminated string in malloc'd storage.

If readlink fails, return NULL and set errno.

If allocation fails, or if the link value is longer than SIZE_MAX :-),

return NULL and set errno to ENOMEM. */

char *

areadlink (char const *filename)

{

return careadlinkat (AT_FDCWD, filename, NULL, 0, NULL, careadlinkatcwd);

executed 2 times by 1 test: return careadlinkat ( -100 , filename, ((void *)0) , 0, ((void *)0) , careadlinkatcwd);

Executed by:

stdbuf

}

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