Some wrapper functions for ioctl APIs in libnilfs do not initialize unused arguments passed to kernel space. This is hurting extensibility of these ioctls. This fixes the issue.
Signed-off-by: Ryusuke Konishi <[email protected]> --- lib/nilfs.c | 7 +++++++ 1 file changed, 7 insertions(+) diff --git a/lib/nilfs.c b/lib/nilfs.c index ebe50b8..7265830 100644 --- a/lib/nilfs.c +++ b/lib/nilfs.c @@ -448,6 +448,7 @@ int nilfs_change_cpmode(struct nilfs *nilfs, nilfs_cno_t cno, int mode) cpmode.cm_cno = cno; cpmode.cm_mode = mode; + cpmode.cm_pad = 0; return ioctl(nilfs->n_iocfd, NILFS_IOCTL_CHANGE_CPMODE, &cpmode); } @@ -539,6 +540,7 @@ ssize_t nilfs_get_suinfo(const struct nilfs *nilfs, __u64 segnum, argv.v_base = (unsigned long)si; argv.v_nmembs = nsi; argv.v_size = sizeof(struct nilfs_suinfo); + argv.v_flags = 0; argv.v_index = segnum; if (ioctl(nilfs->n_iocfd, NILFS_IOCTL_GET_SUINFO, &argv) < 0) return -1; @@ -579,6 +581,8 @@ ssize_t nilfs_get_vinfo(const struct nilfs *nilfs, argv.v_base = (unsigned long)vinfo; argv.v_nmembs = nvi; argv.v_size = sizeof(struct nilfs_vinfo); + argv.v_flags = 0; + argv.v_index = 0; if (ioctl(nilfs->n_iocfd, NILFS_IOCTL_GET_VINFO, &argv) < 0) return -1; return argv.v_nmembs; @@ -603,6 +607,8 @@ ssize_t nilfs_get_bdescs(const struct nilfs *nilfs, argv.v_base = (unsigned long)bdescs; argv.v_nmembs = nbdescs; argv.v_size = sizeof(struct nilfs_bdesc); + argv.v_flags = 0; + argv.v_index = 0; if (ioctl(nilfs->n_iocfd, NILFS_IOCTL_GET_BDESCS, &argv) < 0) return -1; return argv.v_nmembs; @@ -636,6 +642,7 @@ int nilfs_clean_segments(struct nilfs *nilfs, return -1; } + memset(argv, 0, sizeof(argv)); argv[0].v_base = (unsigned long)vdescs; argv[0].v_nmembs = nvdescs; argv[0].v_size = sizeof(struct nilfs_vdesc); -- 1.7.9.3 -- To unsubscribe from this list: send the line "unsubscribe linux-nilfs" in the body of a message to [email protected] More majordomo info at http://vger.kernel.org/majordomo-info.html
