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https://github.com/alsa-project/alsa-lib.git
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81a7a93636
config.h may contain defines like _FILE_OFFSET_BITS which influence
the system wide include files (off_t types, open -> open64 function
usage etc.).
Fixes: ad3a8b8b ("reshuffle included files to include config.h as first")
Related: https://github.com/alsa-project/alsa-lib/pull/333
Signed-off-by: Jaroslav Kysela <perex@perex.cz>
122 lines
2.8 KiB
C
122 lines
2.8 KiB
C
/*
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* Get full filename
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* Copyright (c) 2003 by Jaroslav Kysela <perex@perex.cz>
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*
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* This library is free software; you can redistribute it and/or modify
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* it under the terms of the GNU Lesser General Public License as
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* published by the Free Software Foundation; either version 2.1 of
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* the License, or (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with this library; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
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*
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*/
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#include "config.h"
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#include <string.h>
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#include <errno.h>
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#include <assert.h>
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/**
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* \brief Get the full file name
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* \param file The file name string to parse
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* \param result The pointer to store the resultant file name
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* \return 0 if successful, or a negative error code
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*
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* Parses the given file name with POSIX-Shell-like expansion and
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* stores the first matchine one. The returned string is strdup'ed.
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*/
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#ifdef HAVE_WORDEXP
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#include <wordexp.h>
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int snd_user_file(const char *file, char **result)
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{
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wordexp_t we;
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int err;
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assert(file && result);
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err = wordexp(file, &we, WRDE_NOCMD);
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switch (err) {
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case WRDE_NOSPACE:
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wordfree(&we);
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return -ENOMEM;
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case 0:
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if (we.we_wordc == 1)
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break;
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wordfree(&we);
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/* fall thru */
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default:
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return -EINVAL;
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}
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*result = strdup(we.we_wordv[0]);
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wordfree(&we);
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if (*result == NULL)
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return -ENOMEM;
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return 0;
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}
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#else /* !HAVE_WORDEX */
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#include <sys/types.h>
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#include <unistd.h>
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#include <pwd.h>
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#include <stdio.h>
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#include <stdlib.h>
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int snd_user_file(const char *file, char **result)
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{
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int err;
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size_t len;
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char *buf = NULL;
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assert(file && result);
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*result = NULL;
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/* expand ~/ if needed */
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if (file[0] == '~' && file[1] == '/') {
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const char *home = getenv("HOME");
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if (home == NULL) {
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struct passwd pwent, *p = NULL;
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uid_t id = getuid();
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size_t bufsize = 1024;
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buf = malloc(bufsize);
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if (buf == NULL)
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goto out;
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while ((err = getpwuid_r(id, &pwent, buf, bufsize, &p)) == ERANGE) {
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char *newbuf;
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bufsize += 1024;
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if (bufsize < 1024)
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break;
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newbuf = realloc(buf, bufsize);
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if (newbuf == NULL)
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goto out;
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buf = newbuf;
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}
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home = err ? "" : pwent.pw_dir;
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}
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len = strlen(home) + strlen(&file[2]) + 2;
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*result = malloc(len);
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if (*result)
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snprintf(*result, len, "%s/%s", home, &file[2]);
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} else {
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*result = strdup(file);
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}
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out:
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if (buf)
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free(buf);
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if (*result == NULL)
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return -ENOMEM;
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return 0;
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}
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#endif /* HAVE_WORDEXP */
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