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e2fsprogs
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ChangeLog, ismounted.c: 

ismounted.c (check_mntent_file): Use a test file in / to check to see
  	if the root filesystem is mounted read-only.  This protects against
  	the case where /etc might not be on /, as well as the case where
  	/etc/mtab doesn't exist.  (Both are should-never happen scenarios, but
  	you never know...)
bitmap-optimize
Theodore Ts'o 2001-06-15 18:33:43 +00:00
parent a35bcab0dd
commit 997b820e94
2 changed files with 11 additions and 1 deletions
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8
lib/ext2fs/ChangeLog
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@ -1,3 +1,11 @@
2001-06-15 Theodore Tso <tytso@valinux.com>
* ismounted.c (check_mntent_file): Use a test file in / to check
to see if the root filesystem is mounted read-only. This
protects against the case where /etc might not be on /, as
well as the case where /etc/mtab doesn't exist. (Both are
should-never happen scenarios, but you never know...)
2001-06-14 Theodore Tso <tytso@valinux.com>
* ismounted.c (ext2fs_check_if_mounted): Fix grammer in comment.

4
lib/ext2fs/ismounted.c
View File

@ -92,13 +92,15 @@ static errcode_t check_mntent_file(const char *mtab_file, const char *file,
*/
if (!strcmp(mnt->mnt_dir, "/")) {
is_root:
#define TEST_FILE "/.ismount-test-file"
*mount_flags |= EXT2_MF_ISROOT;
fd = open(MOUNTED, O_RDWR);
fd = open(TEST_FILE, O_RDWR|O_CREAT);
if (fd < 0) {
if (errno == EROFS)
*mount_flags |= EXT2_MF_READONLY;
} else
close(fd);
(void) unlink(TEST_FILE);
}
endmntent (f);
return 0;