diff options
author | David McCullough <davidm@snapgear.com> | 2002-01-17 06:26:05 +0000 |
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committer | David McCullough <davidm@snapgear.com> | 2002-01-17 06:26:05 +0000 |
commit | 23457259675d4a21f6840a30e2b41014540eab2d (patch) | |
tree | 1e29e4b02bd95566e6aea0205d4e8b564c5ce853 /libc/pwd_grp/__getspent_r.c | |
parent | 47e0a8060499c822772437a3ca1765297857c131 (diff) |
* Added /etc/shadow support (Config selectable)
* Moved some file paths from code into <paths.h>
Diffstat (limited to 'libc/pwd_grp/__getspent_r.c')
-rw-r--r-- | libc/pwd_grp/__getspent_r.c | 57 |
1 files changed, 57 insertions, 0 deletions
diff --git a/libc/pwd_grp/__getspent_r.c b/libc/pwd_grp/__getspent_r.c new file mode 100644 index 000000000..d8e1fbdce --- /dev/null +++ b/libc/pwd_grp/__getspent_r.c @@ -0,0 +1,57 @@ +/* + * __getspent_r.c - Based on __getpwent_r.c + * + * This library is free software; you can redistribute it and/or + * modify it under the terms of the GNU Library General Public + * License as published by the Free Software Foundation; either + * version 2 of the License, or (at your option) any later version. + * + * This library 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 + * Library General Public License for more details. + * + * You should have received a copy of the GNU Library General Public + * License along with this library; if not, write to the Free + * Software Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. + * + */ + +#include <stdlib.h> +#include <unistd.h> +#include <string.h> +#include <fcntl.h> +#include <shadow.h> + + +int __getspent_r(struct spwd * spwd, char * line_buff, size_t buflen, int spwd_fd) +{ + char *endptr; + int line_len; + + /* We use the restart label to handle malformatted lines */ + restart: + /* Read the shadow line into the static buffer using a minimal of + syscalls. */ + if ((line_len = read(spwd_fd, line_buff, buflen)) <= 0) + return -1; + endptr = strchr(line_buff, '\n'); + if (endptr != NULL) + lseek(spwd_fd, (long) (1 + endptr - (line_buff + line_len)), + SEEK_CUR); + else { /* The line is too long - skip it. :-\ */ + + do { + if ((line_len = read(spwd_fd, line_buff, buflen)) <= 0) + return -1; + } while (!(endptr = strchr(line_buff, '\n'))); + lseek(spwd_fd, (long) (endptr - line_buff) - line_len + 1, + SEEK_CUR); + goto restart; + } + + if (__sgetspent_r(line_buff, spwd, line_buff, buflen) < 0) + goto restart; + + return 0; +} |