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Diffstat (limited to 'libc/pwd_grp/__getspent_r.c')
-rw-r--r--libc/pwd_grp/__getspent_r.c57
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;
+}