diff options
| -rw-r--r-- | fs/gfs2/sys.c | 66 |
1 files changed, 48 insertions, 18 deletions
diff --git a/fs/gfs2/sys.c b/fs/gfs2/sys.c index ae8e8811f0e8..c9ff1cf7d4f3 100644 --- a/fs/gfs2/sys.c +++ b/fs/gfs2/sys.c @@ -101,8 +101,11 @@ static ssize_t freeze_show(struct gfs2_sbd *sdp, char *buf) static ssize_t freeze_store(struct gfs2_sbd *sdp, const char *buf, size_t len) { - int error; - int n = simple_strtol(buf, NULL, 0); + int error, n; + + error = kstrtoint(buf, 0, &n); + if (error) + return error; if (!capable(CAP_SYS_ADMIN)) return -EPERM; @@ -134,10 +137,16 @@ static ssize_t withdraw_show(struct gfs2_sbd *sdp, char *buf) static ssize_t withdraw_store(struct gfs2_sbd *sdp, const char *buf, size_t len) { + int error, val; + if (!capable(CAP_SYS_ADMIN)) return -EPERM; - if (simple_strtol(buf, NULL, 0) != 1) + error = kstrtoint(buf, 0, &val); + if (error) + return error; + + if (val != 1) return -EINVAL; gfs2_lm_withdraw(sdp, "withdrawing from cluster at user's request\n"); @@ -148,10 +157,16 @@ static ssize_t withdraw_store(struct gfs2_sbd *sdp, const char *buf, size_t len) static ssize_t statfs_sync_store(struct gfs2_sbd *sdp, const char *buf, size_t len) { + int error, val; + if (!capable(CAP_SYS_ADMIN)) return -EPERM; - if (simple_strtol(buf, NULL, 0) != 1) + error = kstrtoint(buf, 0, &val); + if (error) + return error; + + if (val != 1) return -EINVAL; gfs2_statfs_sync(sdp->sd_vfs, 0); @@ -161,10 +176,16 @@ static ssize_t statfs_sync_store(struct gfs2_sbd *sdp, const char *buf, static ssize_t quota_sync_store(struct gfs2_sbd *sdp, const char *buf, size_t len) { + int error, val; + if (!capable(CAP_SYS_ADMIN)) return -EPERM; - if (simple_strtol(buf, NULL, 0) != 1) + error = kstrtoint(buf, 0, &val); + if (error) + return error; + + if (val != 1) return -EINVAL; gfs2_quota_sync(sdp->sd_vfs, 0); @@ -181,7 +202,9 @@ static ssize_t quota_refresh_user_store(struct gfs2_sbd *sdp, const char *buf, if (!capable(CAP_SYS_ADMIN)) return -EPERM; - id = simple_strtoul(buf, NULL, 0); + error = kstrtou32(buf, 0, &id); + if (error) + return error; qid = make_kqid(current_user_ns(), USRQUOTA, id); if (!qid_valid(qid)) @@ -201,7 +224,9 @@ static ssize_t quota_refresh_group_store(struct gfs2_sbd *sdp, const char *buf, if (!capable(CAP_SYS_ADMIN)) return -EPERM; - id = simple_strtoul(buf, NULL, 0); + error = kstrtou32(buf, 0, &id); + if (error) + return error; qid = make_kqid(current_user_ns(), GRPQUOTA, id); if (!qid_valid(qid)) @@ -324,10 +349,11 @@ static ssize_t block_show(struct gfs2_sbd *sdp, char *buf) static ssize_t block_store(struct gfs2_sbd *sdp, const char *buf, size_t len) { struct lm_lockstruct *ls = &sdp->sd_lockstruct; - ssize_t ret = len; - int val; + int ret, val; - val = simple_strtol(buf, NULL, 0); + ret = kstrtoint(buf, 0, &val); + if (ret) + return ret; if (val == 1) set_bit(DFL_BLOCK_LOCKS, &ls->ls_recover_flags); @@ -336,9 +362,9 @@ static ssize_t block_store(struct gfs2_sbd *sdp, const char *buf, size_t len) smp_mb__after_atomic(); gfs2_glock_thaw(sdp); } else { - ret = -EINVAL; + return -EINVAL; } - return ret; + return len; } static ssize_t wdack_show(struct gfs2_sbd *sdp, char *buf) @@ -350,17 +376,18 @@ static ssize_t wdack_show(struct gfs2_sbd *sdp, char *buf) static ssize_t wdack_store(struct gfs2_sbd *sdp, const char *buf, size_t len) { - ssize_t ret = len; - int val; + int ret, val; - val = simple_strtol(buf, NULL, 0); + ret = kstrtoint(buf, 0, &val); + if (ret) + return ret; if ((val == 1) && !strcmp(sdp->sd_lockstruct.ls_ops->lm_proto_name, "lock_dlm")) complete(&sdp->sd_wdack); else - ret = -EINVAL; - return ret; + return -EINVAL; + return len; } static ssize_t lkfirst_show(struct gfs2_sbd *sdp, char *buf) @@ -553,11 +580,14 @@ static ssize_t tune_set(struct gfs2_sbd *sdp, unsigned int *field, { struct gfs2_tune *gt = &sdp->sd_tune; unsigned int x; + int error; if (!capable(CAP_SYS_ADMIN)) return -EPERM; - x = simple_strtoul(buf, NULL, 0); + error = kstrtouint(buf, 0, &x); + if (error) + return error; if (check_zero && !x) return -EINVAL; |