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fixed statfs.f_type signed vs unsigned comparisons

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statfs.f_type is signed but the filesystem magics are unsigned.
Casting the magics to signed will not make the signed.

Problem seen on big-endian 64bit s390x with __fsword_t 8 bytes.

Casting statfs.f_type to unsigned on the other hand will get us what we
need.

https://bugzilla.redhat.com/show_bug.cgi?id=953217
This commit is contained in:
Harald Hoyer 2013-04-17 18:03:39 +02:00
parent 90cf049bfe
commit 8c68a70170
3 changed files with 8 additions and 8 deletions
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10
src/journal/sd-journal.c
View File

@ -1248,11 +1248,11 @@ static void check_network(sd_journal *j, int fd) {
return;
j->on_network =
(long)sfs.f_type == (long)CIFS_MAGIC_NUMBER ||
sfs.f_type == CODA_SUPER_MAGIC ||
sfs.f_type == NCP_SUPER_MAGIC ||
sfs.f_type == NFS_SUPER_MAGIC ||
sfs.f_type == SMB_SUPER_MAGIC;
(unsigned) sfs.f_type == CIFS_MAGIC_NUMBER ||
(unsigned) sfs.f_type == CODA_SUPER_MAGIC ||
(unsigned) sfs.f_type == NCP_SUPER_MAGIC ||
(unsigned) sfs.f_type == NFS_SUPER_MAGIC ||
(unsigned) sfs.f_type == SMB_SUPER_MAGIC;
}
static int add_file(sd_journal *j, const char *prefix, const char *filename) {

2
src/readahead/readahead-collect.c
View File

@ -505,7 +505,7 @@ done:
on_ssd = fs_on_ssd(root) > 0;
log_debug("On SSD: %s", yes_no(on_ssd));
on_btrfs = statfs(root, &sfs) >= 0 && (long) sfs.f_type == (long) BTRFS_SUPER_MAGIC;
on_btrfs = statfs(root, &sfs) >= 0 && (unsigned) sfs.f_type == BTRFS_SUPER_MAGIC;
log_debug("On btrfs: %s", yes_no(on_btrfs));
if (asprintf(&pack_fn_new, "%s/.readahead.new", root) < 0) {

4
src/shared/util.c
View File

@ -2779,8 +2779,8 @@ int rm_rf_children_dangerous(int fd, bool only_dirs, bool honour_sticky, struct
static int is_temporary_fs(struct statfs *s) {
assert(s);
return s->f_type == TMPFS_MAGIC ||
(long)s->f_type == (long)RAMFS_MAGIC;
return (unsigned) s->f_type == TMPFS_MAGIC ||
(unsigned) s->f_type == RAMFS_MAGIC;
}
int rm_rf_children(int fd, bool only_dirs, bool honour_sticky, struct stat *root_dev) {