busybox/libbb/securetty.c

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/* vi: set sw=4 ts=4: */
/*
* /etc/securetty checking.
*
* Licensed under GPLv2, see file LICENSE in this source tree.
*/
#include "libbb.h"
int FAST_FUNC check_securetty(const char *short_tty)
{
char *buf = (char*)"/etc/securetty"; /* any non-NULL is ok */
parser_t *parser = config_open2("/etc/securetty", fopen_for_read);
while (config_read(parser, &buf, 1, 1, "# \t", PARSE_NORMAL)) {
if (strcmp(buf, short_tty) == 0)
break;
buf = NULL;
}
config_close(parser);
/* buf != NULL here if config file was not found, empty
* or line was found which equals short_tty */
return buf != NULL;
}