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(get_fs_usage): If DISK is 0 and we needed to use

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it, return -1 with 0 in ERRNO.

From Miles.
This commit is contained in:
Jim Meyering
1996-11-28 19:37:01 +00:00
parent ac66871c65
commit bcb8610977
1 changed files with 10 additions and 3 deletions
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13
lib/fsusage.c
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@@ -1,5 +1,5 @@
/* fsusage.c -- return space usage of mounted filesystems
Copyright (C) 1991, 1992 Free Software Foundation, Inc.
Copyright (C) 1991, 1992, 1996 Free Software Foundation, Inc.
This program is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
@@ -90,8 +90,9 @@ adjust_blocks (blocks, fromsize, tosize)
the filesystem on which PATH resides.
DISK is the device on which PATH is mounted, for space-getting
methods that need to know it.
Return 0 if successful, -1 if not. */
Return 0 if successful, -1 if not. When returning -1, ensure that
ERRNO is either a system error value, or zero if DISK is NULL
on a system that requires a non-NULL value. */
int
get_fs_usage (path, disk, fsp)
const char *path;
@@ -133,6 +134,12 @@ get_fs_usage (path, disk, fsp)
struct filsys fsd;
int fd;
if (! disk)
{
errno = 0;
return -1;
}
fd = open (disk, O_RDONLY);
if (fd < 0)
return -1;