static int compare_u32(const void *v1, const void *v2)
{
- return (*(__u32 *)v1 - *(__u32 *)v2);
+ return *(__u32 *)v1 - *(__u32 *)v2;
}
static void errlog(const char *fmt, ...)
groups = data->idd_groups;
- /* Allocate array of size maxgroups instead of handling two
- * consecutive and potentially racy getgrouplist() calls. */
+ /*
+ * Allocate array of size maxgroups instead of handling two
+ * consecutive and potentially racy getgrouplist() calls.
+ */
groups_tmp = malloc(maxgroups * sizeof(gid_t));
- if (groups_tmp == NULL) {
+ if (!groups_tmp) {
data->idd_err = errno ? errno : ENOMEM;
- errlog("malloc error=%u\n",data->idd_err);
+ errlog("malloc error=%u\n", data->idd_err);
return -1;
}
free(groups_tmp);
data->idd_err = errno ? errno : EIDRM;
errlog("getgrouplist() error for uid %u: error=%u\n",
- data->idd_uid, data->idd_err);
+ data->idd_uid, data->idd_err);
return -1;
}
static inline int comment_line(char *line)
{
- char *p = line;
+ char *p = line;
- while (*p && (*p == ' ' || *p == '\t')) p++;
+ while (*p && (*p == ' ' || *p == '\t'))
+ p++;
- if (!*p || *p == '\n' || *p == '#')
- return 1;
- return 0;
+ if (!*p || *p == '\n' || *p == '#')
+ return 1;
+ return 0;
}
static inline int match_uid(uid_t uid, const char *str)
{
- char *end;
- uid_t uid2;
+ char *end;
+ uid_t uid2;
- if(!strcmp(str, "*"))
- return -1;
+ if (!strcmp(str, "*"))
+ return -1;
- uid2 = strtoul(str, &end, 0);
- if (*end)
- return 0;
- return (uid == uid2);
+ uid2 = strtoul(str, &end, 0);
+ if (*end)
+ return 0;
+ return (uid == uid2);
}
typedef struct {
- char *name;
- __u32 bit;
+ char *name;
+ __u32 bit;
} perm_type_t;
static perm_type_t perm_types[] = {
int parse_perm(__u32 *perm, __u32 *noperm, char *str)
{
- char *start, *end;
- char name[64];
- perm_type_t *pt;
-
- *perm = 0;
- *noperm = 0;
- start = str;
- while (1) {
+ char *start, *end;
+ char name[64];
+ perm_type_t *pt;
+
+ *perm = 0;
+ *noperm = 0;
+ start = str;
+ while (1) {
size_t len;
+
memset(name, 0, sizeof(name));
end = strchr(start, ',');
- if (end == NULL)
+ if (!end)
end = str + strlen(str);
if (start >= end)
break;
return -E2BIG;
strncpy(name, start, len);
name[len] = '\0';
- for (pt = perm_types; pt->name; pt++) {
- if (!strcasecmp(name, pt->name)) {
- *perm |= pt->bit;
- break;
- }
- }
-
- if (!pt->name) {
- for (pt = noperm_types; pt->name; pt++) {
- if (!strcasecmp(name, pt->name)) {
- *noperm |= pt->bit;
- break;
- }
- }
-
- if (!pt->name) {
- printf("unkown type: %s\n", name);
- return -1;
- }
- }
-
- start = end + 1;
- }
- return 0;
+ for (pt = perm_types; pt->name; pt++) {
+ if (!strcasecmp(name, pt->name)) {
+ *perm |= pt->bit;
+ break;
+ }
+ }
+
+ if (!pt->name) {
+ for (pt = noperm_types; pt->name; pt++) {
+ if (!strcasecmp(name, pt->name)) {
+ *noperm |= pt->bit;
+ break;
+ }
+ }
+
+ if (!pt->name) {
+ printf("unkown type: %s\n", name);
+ return -1;
+ }
+ }
+
+ start = end + 1;
+ }
+ return 0;
}
static int
char uid_str[size];
char nid_str[size];
char perm_str[size];
- lnet_nid_t nid;
- __u32 perm, noperm;
- int rc, i;
+ lnet_nid_t nid;
+ __u32 perm, noperm;
+ int rc, i;
- if (data->idd_nperms >= N_PERMS_MAX) {
- errlog("permission count %d > max %d\n",
- data->idd_nperms, N_PERMS_MAX);
- return -1;
- }
+ if (data->idd_nperms >= N_PERMS_MAX) {
+ errlog("permission count %d > max %d\n",
+ data->idd_nperms, N_PERMS_MAX);
+ return -1;
+ }
rc = sscanf(line, "%s %s %s", nid_str, uid_str, perm_str);
- if (rc != 3) {
- errlog("can't parse line %s\n", line);
- return -1;
- }
-
- if (!match_uid(data->idd_uid, uid_str))
- return 0;
-
- if (!strcmp(nid_str, "*")) {
- nid = LNET_NID_ANY;
- } else {
- nid = libcfs_str2nid(nid_str);
- if (nid == LNET_NID_ANY) {
- errlog("can't parse nid %s\n", nid_str);
- return -1;
- }
- }
-
- if (parse_perm(&perm, &noperm, perm_str)) {
- errlog("invalid perm %s\n", perm_str);
- return -1;
- }
-
- /* merge the perms with the same nid.
- *
- * If there is LNET_NID_ANY in data->idd_perms[i].pdd_nid,
- * it must be data->idd_perms[0].pdd_nid, and act as default perm.
- */
- if (nid != LNET_NID_ANY) {
- int found = 0;
-
- /* search for the same nid */
- for (i = data->idd_nperms - 1; i >= 0; i--) {
- if (data->idd_perms[i].pdd_nid == nid) {
- data->idd_perms[i].pdd_perm =
- (data->idd_perms[i].pdd_perm | perm) &
- ~noperm;
- found = 1;
- break;
- }
- }
-
- /* NOT found, add to tail */
- if (!found) {
- data->idd_perms[data->idd_nperms].pdd_nid = nid;
- data->idd_perms[data->idd_nperms].pdd_perm =
- perm & ~noperm;
- data->idd_nperms++;
- }
- } else {
- if (data->idd_nperms > 0) {
- /* the first one isn't LNET_NID_ANY, need exchange */
- if (data->idd_perms[0].pdd_nid != LNET_NID_ANY) {
- data->idd_perms[data->idd_nperms].pdd_nid =
- data->idd_perms[0].pdd_nid;
- data->idd_perms[data->idd_nperms].pdd_perm =
- data->idd_perms[0].pdd_perm;
- data->idd_perms[0].pdd_nid = LNET_NID_ANY;
- data->idd_perms[0].pdd_perm = perm & ~noperm;
- data->idd_nperms++;
- } else {
- /* only fix LNET_NID_ANY item */
- data->idd_perms[0].pdd_perm =
- (data->idd_perms[0].pdd_perm | perm) &
- ~noperm;
- }
- } else {
- /* it is the first one, only add to head */
- data->idd_perms[0].pdd_nid = LNET_NID_ANY;
- data->idd_perms[0].pdd_perm = perm & ~noperm;
- data->idd_nperms = 1;
- }
- }
-
- return 0;
+ if (rc != 3) {
+ errlog("can't parse line %s\n", line);
+ return -1;
+ }
+
+ if (!match_uid(data->idd_uid, uid_str))
+ return 0;
+
+ if (!strcmp(nid_str, "*")) {
+ nid = LNET_NID_ANY;
+ } else {
+ nid = libcfs_str2nid(nid_str);
+ if (nid == LNET_NID_ANY) {
+ errlog("can't parse nid %s\n", nid_str);
+ return -1;
+ }
+ }
+
+ if (parse_perm(&perm, &noperm, perm_str)) {
+ errlog("invalid perm %s\n", perm_str);
+ return -1;
+ }
+
+ /*
+ * merge the perms with the same nid.
+ *
+ * If there is LNET_NID_ANY in data->idd_perms[i].pdd_nid,
+ * it must be data->idd_perms[0].pdd_nid, and act as default perm.
+ */
+ if (nid != LNET_NID_ANY) {
+ int found = 0;
+
+ /* search for the same nid */
+ for (i = data->idd_nperms - 1; i >= 0; i--) {
+ if (data->idd_perms[i].pdd_nid == nid) {
+ data->idd_perms[i].pdd_perm =
+ (data->idd_perms[i].pdd_perm | perm) &
+ ~noperm;
+ found = 1;
+ break;
+ }
+ }
+
+ /* NOT found, add to tail */
+ if (!found) {
+ data->idd_perms[data->idd_nperms].pdd_nid = nid;
+ data->idd_perms[data->idd_nperms].pdd_perm =
+ perm & ~noperm;
+ data->idd_nperms++;
+ }
+ } else {
+ if (data->idd_nperms > 0) {
+ /* the first one isn't LNET_NID_ANY, need exchange */
+ if (data->idd_perms[0].pdd_nid != LNET_NID_ANY) {
+ data->idd_perms[data->idd_nperms].pdd_nid =
+ data->idd_perms[0].pdd_nid;
+ data->idd_perms[data->idd_nperms].pdd_perm =
+ data->idd_perms[0].pdd_perm;
+ data->idd_perms[0].pdd_nid = LNET_NID_ANY;
+ data->idd_perms[0].pdd_perm = perm & ~noperm;
+ data->idd_nperms++;
+ } else {
+ /* only fix LNET_NID_ANY item */
+ data->idd_perms[0].pdd_perm =
+ (data->idd_perms[0].pdd_perm | perm) &
+ ~noperm;
+ }
+ } else {
+ /* it is the first one, only add to head */
+ data->idd_perms[0].pdd_nid = LNET_NID_ANY;
+ data->idd_perms[0].pdd_perm = perm & ~noperm;
+ data->idd_nperms = 1;
+ }
+ }
+
+ return 0;
}
int get_perms(struct identity_downcall_data *data)
FILE *fp;
char line[PATH_MAX];
- fp = fopen(PERM_PATHNAME, "r");
- if (fp == NULL) {
- if (errno == ENOENT) {
- return 0;
- } else {
- errlog("open %s failed: %s\n",
- PERM_PATHNAME, strerror(errno));
- data->idd_err = errno;
- return -1;
- }
- }
+ fp = fopen(PERM_PATHNAME, "r");
+ if (!fp) {
+ if (errno == ENOENT)
+ return 0;
+ errlog("open %s failed: %s\n",
+ PERM_PATHNAME, strerror(errno));
+ data->idd_err = errno;
+ return -1;
+ }
while (fgets(line, sizeof(line), fp)) {
- if (comment_line(line))
- continue;
+ if (comment_line(line))
+ continue;
if (parse_perm_line(data, line, sizeof(line))) {
- errlog("parse line %s failed!\n", line);
- data->idd_err = EINVAL;
- fclose(fp);
- return -1;
- }
- }
-
- fclose(fp);
- return 0;
+ errlog("parse line %s failed!\n", line);
+ data->idd_err = EINVAL;
+ fclose(fp);
+ return -1;
+ }
+ }
+
+ fclose(fp);
+ return 0;
}
static void show_result(struct identity_downcall_data *data)
{
- int i;
+ int i;
- if (data->idd_err) {
- errlog("failed to get identity for uid %d: %s\n",
- data->idd_uid, strerror(data->idd_err));
- return;
- }
+ if (data->idd_err) {
+ errlog("failed to get identity for uid %d: %s\n",
+ data->idd_uid, strerror(data->idd_err));
+ return;
+ }
- printf("uid=%d gid=%d", data->idd_uid, data->idd_gid);
- for (i = 0; i < data->idd_ngroups; i++)
- printf(",%u", data->idd_groups[i]);
- printf("\n");
- printf("permissions:\n"
- " nid\t\t\tperm\n");
- for (i = 0; i < data->idd_nperms; i++) {
- struct perm_downcall_data *pdd;
+ printf("uid=%d gid=%d", data->idd_uid, data->idd_gid);
+ for (i = 0; i < data->idd_ngroups; i++)
+ printf(",%u", data->idd_groups[i]);
+ printf("\n");
+ printf("permissions:\n"
+ " nid\t\t\tperm\n");
+ for (i = 0; i < data->idd_nperms; i++) {
+ struct perm_downcall_data *pdd;
- pdd = &data->idd_perms[i];
+ pdd = &data->idd_perms[i];
printf(" %#jx\t0x%x\n", (uintmax_t)pdd->pdd_nid,
pdd->pdd_perm);
- }
- printf("\n");
+ }
+ printf("\n");
}
int main(int argc, char **argv)
unsigned long uid;
int fd, rc = -EINVAL, size, maxgroups;
- progname = basename(argv[0]);
- if (argc != 3) {
- usage();
- goto out;
- }
-
- uid = strtoul(argv[2], &end, 0);
- if (*end) {
- errlog("%s: invalid uid '%s'\n", progname, argv[2]);
- goto out;
- }
-
- maxgroups = sysconf(_SC_NGROUPS_MAX);
- if (maxgroups > NGROUPS_MAX)
- maxgroups = NGROUPS_MAX;
+ progname = basename(argv[0]);
+ if (argc != 3) {
+ usage();
+ goto out;
+ }
+
+ uid = strtoul(argv[2], &end, 0);
+ if (*end) {
+ errlog("%s: invalid uid '%s'\n", progname, argv[2]);
+ goto out;
+ }
+
+ maxgroups = sysconf(_SC_NGROUPS_MAX);
+ if (maxgroups > NGROUPS_MAX)
+ maxgroups = NGROUPS_MAX;
if (maxgroups == -1) {
rc = -EINVAL;
goto out;
}
- size = offsetof(struct identity_downcall_data, idd_groups[maxgroups]);
- data = malloc(size);
- if (!data) {
- errlog("malloc identity downcall data(%d) failed!\n", size);
- rc = -ENOMEM;
- goto out;
- }
-
- memset(data, 0, size);
- data->idd_magic = IDENTITY_DOWNCALL_MAGIC;
- data->idd_uid = uid;
- /* get groups for uid */
- rc = get_groups_local(data, maxgroups);
- if (rc)
- goto downcall;
-
- size = offsetof(struct identity_downcall_data,
- idd_groups[data->idd_ngroups]);
- /* read permission database */
- rc = get_perms(data);
+ size = offsetof(struct identity_downcall_data, idd_groups[maxgroups]);
+ data = malloc(size);
+ if (!data) {
+ errlog("malloc identity downcall data(%d) failed!\n", size);
+ rc = -ENOMEM;
+ goto out;
+ }
+
+ memset(data, 0, size);
+ data->idd_magic = IDENTITY_DOWNCALL_MAGIC;
+ data->idd_uid = uid;
+ /* get groups for uid */
+ rc = get_groups_local(data, maxgroups);
+ if (rc)
+ goto downcall;
+
+ size = offsetof(struct identity_downcall_data,
+ idd_groups[data->idd_ngroups]);
+ /* read permission database */
+ rc = get_perms(data);
downcall:
if (strcmp(argv[1], "-d") == 0 || getenv("L_GETIDENTITY_TEST")) {
out_params:
cfs_free_param_data(&path);
out:
- if (data != NULL)
+ if (data)
free(data);
return rc;
}
git://git.whamcloud.com / fs / lustre-release.git / commitdiff