...and add -D_FORTIFY_SOURCE=2 to the default $CFLAGS.
Signed-off-by: Jeff Layton <jlayton@xxxxxxxxx>
---
Makefile.am | 2 +-
mount.cifs.c | 12 +++++++-----
mtab.c | 4 +++-
3 files changed, 11 insertions(+), 7 deletions(-)
diff --git a/Makefile.am b/Makefile.am
index d95142a..05729ca 100644
--- a/Makefile.am
+++ b/Makefile.am
@@ -1,4 +1,4 @@
-AM_CFLAGS = -Wall -Wextra -Werror
+AM_CFLAGS = -Wall -Wextra -Werror -D_FORTIFY_SOURCE=2
ACLOCAL_AMFLAGS = -I aclocal
root_sbindir = $(ROOTSBINDIR)
diff --git a/mount.cifs.c b/mount.cifs.c
index f0b073e..ecbf034 100644
--- a/mount.cifs.c
+++ b/mount.cifs.c
@@ -928,10 +928,10 @@ parse_options(const char *data, struct parsed_mount_info *parsed_info)
}
} else {
/* domain/username%password */
- const int max = MAX_DOMAIN_SIZE +
- MAX_USERNAME_SIZE +
- MOUNT_PASSWD_SIZE + 2;
- if (strnlen(value, max + 1) >= max + 1) {
+ const size_t max = MAX_DOMAIN_SIZE +
+ MAX_USERNAME_SIZE +
+ MOUNT_PASSWD_SIZE + 2 + 1;
+ if (strnlen(value, max) >= max) {
fprintf(stderr, "username too long\n");
return EX_USAGE;
}
@@ -1603,8 +1603,10 @@ add_mtab(char *devname, char *mountpoint, unsigned long flags, const char *fstyp
mountent.mnt_passno = 0;
rc = addmntent(pmntfile, &mountent);
if (rc) {
+ int ignore __attribute__((unused));
+
fprintf(stderr, "unable to add mount entry to mtab\n");
- ftruncate(fd, statbuf.st_size);
+ ignore = ftruncate(fd, statbuf.st_size);
rc = EX_FILEIO;
}
tmprc = my_endmntent(pmntfile, statbuf.st_size);
diff --git a/mtab.c b/mtab.c
index de545b7..3d42ac0 100644
--- a/mtab.c
+++ b/mtab.c
@@ -271,8 +271,10 @@ my_endmntent(FILE *stream, off_t size)
/* truncate file back to "size" -- best effort here */
if (rc) {
+ int ignore __attribute__((unused));
+
rc = errno;
- ftruncate(fd, size);
+ ignore = ftruncate(fd, size);
}
endmntent(stream);
--
1.7.7.6
--
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