faeb1b64b3
The header files are usually based on code from lib/. This commit copies relevant license headers from lib/ to include/ to keep things consistent. The very generic things (e.g. MBR definitions) are always public domain. Fixes: https://github.com/util-linux/util-linux/issues/2010 Signed-off-by: Karel Zak <kzak@redhat.com>
74 lines
1.4 KiB
C
74 lines
1.4 KiB
C
/*
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* SPDX-License-Identifier: GPL-2.0-or-later
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*/
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#include <sys/syslog.h>
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#if defined (HAVE_LIBECONF) && defined (USE_VENDORDIR)
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#include <libeconf.h>
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#endif
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#include "closestream.h"
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#include "shells.h"
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/*
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* is_known_shell() -- if the given shell appears in /etc/shells
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* or vendor defined files.
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* Return 1 if found and return 0 if not found.
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*/
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extern int is_known_shell(const char *shell_name)
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{
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int ret = 0;
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#if defined (HAVE_LIBECONF) && defined (USE_VENDORDIR)
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size_t size = 0;
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econf_err error;
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char **keys;
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econf_file *key_file;
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error = econf_readDirs(&key_file,
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_PATH_VENDORDIR,
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"/etc",
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"shells",
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NULL,
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"", /* key only */
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"#" /* comment */);
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if (error) {
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syslog(LOG_ALERT,
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_("Cannot parse shells files: %s"),
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econf_errString(error));
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exit(EXIT_FAILURE);
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}
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error = econf_getKeys(key_file, NULL, &size, &keys);
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if (error) {
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syslog(LOG_ALERT,
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_("Cannot evaluate entries in shells files: %s"),
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econf_errString(error));
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econf_free (key_file);
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exit(EXIT_FAILURE);
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}
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for (size_t i = 0; i < size; i++) {
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if (strcmp (keys[i], shell_name) == 0) {
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ret = 1;
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break;
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}
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}
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econf_free (key_file);
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#else
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char *s;
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if (!shell_name)
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return 0;
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setusershell();
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while ((s = getusershell())) {
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if (*s != '#' && strcmp(shell_name, s) == 0) {
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ret = 1;
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break;
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}
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}
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endusershell();
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#endif
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return ret;
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}
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