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authorPranith Kumar K <pkarampu@redhat.com>2014-06-20 16:06:42 +0530
committerVijay Bellur <vbellur@redhat.com>2014-06-22 20:40:57 -0700
commitf022af610d85e7b7cc4f63bf0491a738b5a6f082 (patch)
tree35f18ffee8cb700f14d659e52f72a558674d0bb8 /libglusterfs/src/options.c
parent0c85a8a125eccbd9cf0028116700d7025429656f (diff)
libglusterfs: Don't allow '-0' as input value for numbers
Problem: io-stats tries to init log-buf-size as uint32. All gf_string2u*** functions which get the unsigned values from string don't want the string to contain '-'. So the GF_OPTION_INIT with '-0' as value fails init in io-stats, but by that time 'ret' is already reset to 0. Io-stats ends up returning 0 even when init failed. Because of this caller of init thinks initialization is successful when it is not. iostat_xlator->private is still NULL. Because of this when a fop tries to access members of io-stat-private structure, it crashes. Fix: I initially thought may be we should fix all gf_string2u*** functions to accept '-0'. But all these functions are used only for setting volume options. If we accept '-0', gluster volume info shows output as follows: diagnostics.brick-log-buf-size: -0 This seemed ugly, so I felt it is better to disallow '-0' as valid input for numbers. Also fixed return value in cases of failures in io-stats. Change-Id: I67ac92853b6d2be70516ad1d07505ffd9f058aa4 BUG: 1111557 Signed-off-by: Pranith Kumar K <pkarampu@redhat.com> Reviewed-on: http://review.gluster.org/8129 Reviewed-by: Krutika Dhananjay <kdhananj@redhat.com> Tested-by: Gluster Build System <jenkins@build.gluster.com> Reviewed-by: Harshavardhana <harsha@harshavardhana.net> Tested-by: Harshavardhana <harsha@harshavardhana.net> Reviewed-by: Vijay Bellur <vbellur@redhat.com>
Diffstat (limited to 'libglusterfs/src/options.c')
-rw-r--r--libglusterfs/src/options.c10
1 files changed, 10 insertions, 0 deletions
diff --git a/libglusterfs/src/options.c b/libglusterfs/src/options.c
index f63c60476da..9edb7c03df2 100644
--- a/libglusterfs/src/options.c
+++ b/libglusterfs/src/options.c
@@ -58,6 +58,7 @@ xlator_option_validate_int (xlator_t *xl, const char *key, const char *value,
volume_option_t *opt, char **op_errstr)
{
long long inputll = 0;
+ unsigned long long uinputll = 0;
int ret = -1;
char errstr[256];
@@ -70,6 +71,15 @@ xlator_option_validate_int (xlator_t *xl, const char *key, const char *value,
goto out;
}
+ /* Handle '-0' */
+ if ((inputll == 0) && (gf_string2ulonglong (value, &uinputll) != 0)) {
+ snprintf (errstr, 256,
+ "invalid number format \"%s\" in option \"%s\"",
+ value, key);
+ gf_log (xl->name, GF_LOG_ERROR, "%s", errstr);
+ goto out;
+ }
+
if ((opt->min == 0) && (opt->max == 0) &&
(opt->validate == GF_OPT_VALIDATE_BOTH)) {
gf_log (xl->name, GF_LOG_TRACE,