Fixup errno handling

 -Erik

1 files changed, 7 insertions, 3 deletions

diff --git a/libc/pwd_grp/__getspent_r.c b/libc/pwd_grp/__getspent_r.c
index 7150520d2..73e40f031 100644
--- a/libc/pwd_grp/__getspent_r.c
+++ b/libc/pwd_grp/__getspent_r.c
@@ -20,6 +20,7 @@
 #include <unistd.h>
 #include <string.h>
 #include <fcntl.h>
+#include <errno.h>
 #include "config.h"
 
 
@@ -28,11 +29,14 @@ int __getspent_r(struct spwd * spwd, char * line_buff, size_t buflen, int spwd_f
     char *endptr;
     int line_len;
 
+    if (buflen<PWD_BUFFER_SIZE)
+	return ERANGE;
+
     /* We use the restart label to handle malformatted lines */
 restart:
     /* Read the shadow line into the buffer using a minimum of syscalls. */
     if ((line_len = read(spwd_fd, line_buff, buflen)) <= 0)
-	return -1;
+	return EIO;
     endptr = strchr(line_buff, '\n');
     if (endptr != NULL)
 	lseek(spwd_fd, (long) (1 + endptr - (line_buff + line_len)), SEEK_CUR);
@@ -40,13 +44,13 @@ restart:
 	/* The line is too long - skip it. :-\ */
 	do {
 	    if ((line_len = read(spwd_fd, line_buff, buflen)) <= 0)
-		return -1;
+		return EIO;
 	} 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)
+    if (__sgetspent_r(line_buff, spwd, line_buff, buflen) != 0)
 	goto restart;
 
     return 0;