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Diffstat (limited to 'xlators/mount/fuse/src/fuse-helpers.c')
-rw-r--r--xlators/mount/fuse/src/fuse-helpers.c71
1 files changed, 47 insertions, 24 deletions
diff --git a/xlators/mount/fuse/src/fuse-helpers.c b/xlators/mount/fuse/src/fuse-helpers.c
index fd11f2b..a2b0ad1 100644
--- a/xlators/mount/fuse/src/fuse-helpers.c
+++ b/xlators/mount/fuse/src/fuse-helpers.c
@@ -139,8 +139,6 @@ get_fuse_state(xlator_t *this, fuse_in_header_t *finh)
return state;
}
-#define FUSE_MAX_AUX_GROUPS \
- 32 /* We can get only up to 32 aux groups from /proc */
void
frame_fill_groups(call_frame_t *frame)
{
@@ -150,8 +148,6 @@ frame_fill_groups(call_frame_t *frame)
char filename[32];
char line[4096];
char *ptr = NULL;
- FILE *fp = NULL;
- int idx = 0;
long int id = 0;
char *saveptr = NULL;
char *endptr = NULL;
@@ -191,45 +187,72 @@ frame_fill_groups(call_frame_t *frame)
call_stack_set_groups(frame->root, ngroups, &mygroups);
} else {
+ FILE *fp = NULL;
+
ret = snprintf(filename, sizeof filename, "/proc/%d/status",
frame->root->pid);
- if (ret >= sizeof filename)
+ if (ret >= sizeof filename) {
+ gf_log(this->name, GF_LOG_ERROR, "procfs path exceeds buffer size");
goto out;
+ }
fp = fopen(filename, "r");
- if (!fp)
+ if (!fp) {
+ gf_log(this->name, GF_LOG_ERROR, "failed to open %s: %s", filename,
+ strerror(errno));
goto out;
+ }
- if (call_stack_alloc_groups(frame->root, ngroups) != 0)
- goto out;
+ for (;;) {
+ gf_boolean_t found_groups = _gf_false;
+ int idx = 0;
- while ((ptr = fgets(line, sizeof line, fp))) {
- if (strncmp(ptr, "Groups:", 7) != 0)
- continue;
+ if (call_stack_alloc_groups(frame->root, ngroups) != 0) {
+ gf_log(this->name, GF_LOG_ERROR,
+ "failed to allocate gid buffer");
+ goto out;
+ }
+ while ((ptr = fgets(line, sizeof line, fp))) {
+ if (strncmp(ptr, "Groups:", 7) == 0) {
+ found_groups = _gf_true;
+ break;
+ }
+ }
+ if (!found_groups) {
+ gf_log(this->name, GF_LOG_ERROR, "cannot find gid list in %s",
+ filename);
+ break;
+ }
ptr = line + 8;
for (ptr = strtok_r(ptr, " \t\r\n", &saveptr); ptr;
ptr = strtok_r(NULL, " \t\r\n", &saveptr)) {
errno = 0;
id = strtol(ptr, &endptr, 0);
- if (errno == ERANGE)
- break;
- if (!endptr || *endptr)
+ if (errno == ERANGE || !endptr || *endptr) {
+ gf_log(this->name, GF_LOG_ERROR, "failed to parse %s",
+ filename);
break;
- frame->root->groups[idx++] = id;
- if (idx == FUSE_MAX_AUX_GROUPS)
+ }
+ if (idx < call_stack_groups_capacity(frame->root))
+ frame->root->groups[idx] = id;
+ idx++;
+ if (idx == GF_MAX_AUX_GROUPS)
break;
}
-
- frame->root->ngrps = idx;
- break;
+ if (idx > call_stack_groups_capacity(frame->root)) {
+ ngroups = idx;
+ rewind(fp);
+ } else {
+ frame->root->ngrps = idx;
+ break;
+ }
}
+ out:
+ if (fp)
+ fclose(fp);
}
-
-out:
- if (fp)
- fclose(fp);
#elif defined(GF_SOLARIS_HOST_OS)
char filename[32];
char scratch[128];
@@ -245,7 +268,7 @@ out:
fp = fopen(filename, "r");
if (fp != NULL) {
if (fgets(scratch, sizeof scratch, fp) != NULL) {
- ngrps = MIN(prcred->pr_ngroups, FUSE_MAX_AUX_GROUPS);
+ ngrps = MIN(prcred->pr_ngroups, GF_MAX_AUX_GROUPS);
if (call_stack_alloc_groups(frame->root, ngrps) != 0) {
fclose(fp);
return;