/* Allocate supplementary groups buffer */
static bool my_getgrouplist_alloc(char *user,
gid_t gid,
struct group_data *gdata)
{
int ngroups = 0;
gid_t *groups, *groups2;
/* We call getgrouplist() with 0 ngroups first. This should always
* return -1, and ngroups should be set to the actual number of
* groups the user is in. The manpage doesn't say anything
* about errno value, it was usually zero but was set to 34
* (ERANGE) under some environments. ngroups was set correctly
* no matter what the errno value is!
*
* We assume that ngroups is correctly set, no matter what the
* errno value is. The man page says, "The ngroups argument
* is a value-result argument: on return it always contains
* the number of groups found for user."
*/
(void)getgrouplist(user, gid, NULL, &ngroups);
/* Allocate gdata->groups with the right size then call
* getgrouplist() a second time to get the actual group list
*/
groups = gsh_malloc(ngroups * sizeof(gid_t));
if (groups == NULL)
return false;
if (getgrouplist(user, gid, groups, &ngroups) == -1) {
LogEvent(COMPONENT_IDMAPPER,
"getgrouplist for user: %s failed retrying", user);
gsh_free(groups);
/* Try with the largest ngroups we support */
ngroups = 1000;
groups2 = gsh_malloc(ngroups * sizeof(gid_t));
if (groups2 == NULL)
return false;
if (getgrouplist(user, gid, groups2, &ngroups) == -1) {
LogWarn(COMPONENT_IDMAPPER,
"getgrouplist for user:%s failed, ngroups: %d",
user, ngroups);
gsh_free(groups2);
return false;
}
/* Resize the buffer */
groups = gsh_realloc(groups2, ngroups * sizeof(gid_t));
if (groups == NULL) /* Use the large buffer! */
groups = groups2;
}
gdata->groups = groups;
gdata->nbgroups = ngroups;
return true;
}
int nl_rangelist_incremente_size(nl_rangelist_t *array)
{
int fstatus = -1;
array->pre_allocated_ranges += DEFAULT_RANGELIST_INC_SIZE;
array->array = gsh_realloc(array->array, array->pre_allocated_ranges *
sizeof(nl_range_t));
if (array->array != NULL)
fstatus = 0;
return fstatus;
}
static void memstream_grow(struct memstream *ms, size_t newsize)
{
char *buf;
if (newsize > *ms->lenp) {
buf = gsh_realloc(*ms->cp, newsize + 1);
if (buf != NULL) {
#ifdef DEBUG
fprintf(stderr, "MS: %p growing from %zd to %zd\n", ms,
*ms->lenp, newsize);
#endif
memset(buf + *ms->lenp + 1, 0, newsize - *ms->lenp);
*ms->cp = buf;
*ms->lenp = newsize;
}
}
}
bool pwentuid2grp(uid_t uid, struct gsh_buffdesc *name,
struct group_data *pgdata)
{
char buff[1024];
struct passwd p;
struct passwd *pp;
if ((getpwuid_r(uid, &p, buff, MAXPATHLEN, &pp) != 0) || (pp == NULL)) {
LogEvent(COMPONENT_IDMAPPER, "getpwnam_r %u failed", uid);
return false;
}
/** @todo Waste of memory here. To be fixed */
pgdata->pgroups = (gid_t *) gsh_malloc(MAX_GRP * sizeof(gid_t));
if (pgdata->pgroups == NULL)
return false;
pgdata->nbgroups = MAX_GRP;
if (getgrouplist
(p.pw_name, p.pw_gid, pgdata->pgroups, &pgdata->nbgroups) == -1) {
LogEvent(COMPONENT_IDMAPPER, "getgrouplist %s failed",
p.pw_name);
gsh_free(pgdata->pgroups);
return false;
}
/* Resize pgroups to what it should be */
pgdata->pgroups =
gsh_realloc(pgdata->pgroups, pgdata->nbgroups * sizeof(gid_t));
/* Set puid */
name->addr = p.pw_name;
name->len = strlen(p.pw_name);
/* Set uid/gid */
pgdata->uid = p.pw_uid;
pgdata->gid = p.pw_gid;
return true;
}
/*
* Read the ACL in GlusterFS format and convert it into fsal ACL before
* storing it in fsalattr
*/
fsal_status_t glusterfs_get_acl(struct glusterfs_export *glfs_export,
struct glfs_object *glhandle,
glusterfs_fsal_xstat_t *buffxstat,
struct attrlist *fsalattr)
{
fsal_status_t status = { ERR_FSAL_NO_ERROR, 0 };
fsal_acl_data_t acldata;
fsal_acl_status_t aclstatus;
fsal_ace_t *pace = NULL;
int e_count = 0, i_count = 0, new_count = 0, new_i_count = 0;
if (fsalattr->acl != NULL) {
/* We should never be passed attributes that have an
* ACL attached, but just in case some future code
* path changes that assumption, let's release the
* old ACL properly.
*/
int acl_status;
acl_status = nfs4_acl_release_entry(fsalattr->acl);
if (acl_status != NFS_V4_ACL_SUCCESS)
LogCrit(COMPONENT_FSAL,
"Failed to release old acl, status=%d",
acl_status);
fsalattr->acl = NULL;
}
if (NFSv4_ACL_SUPPORT) {
buffxstat->e_acl = glfs_h_acl_get(glfs_export->gl_fs->fs,
glhandle, ACL_TYPE_ACCESS);
if (!buffxstat->e_acl) {
status = gluster2fsal_error(errno);
return status;
}
e_count = ace_count(buffxstat->e_acl);
if (buffxstat->is_dir) {
buffxstat->i_acl =
glfs_h_acl_get(glfs_export->gl_fs->fs,
glhandle, ACL_TYPE_DEFAULT);
i_count = ace_count(buffxstat->i_acl);
}
/* Allocating memory for both ALLOW and DENY entries */
acldata.naces = 2 * (e_count + i_count);
LogDebug(COMPONENT_FSAL, "No of aces present in fsal_acl_t = %d"
, acldata.naces);
if (!acldata.naces)
return status;
FSAL_SET_MASK(buffxstat->attr_valid, XATTR_ACL);
acldata.aces = (fsal_ace_t *) nfs4_ace_alloc(acldata.naces);
pace = acldata.aces;
new_count = posix_acl_2_fsal_acl(buffxstat->e_acl,
buffxstat->is_dir, false, &pace);
if (new_count < 0)
return fsalstat(ERR_FSAL_NO_ACE, -1);
if (i_count > 0) {
new_i_count = posix_acl_2_fsal_acl(buffxstat->i_acl,
true, true, &pace);
if (new_i_count > 0)
new_count += new_i_count;
else
LogDebug(COMPONENT_FSAL,
"Inherit acl is not set for this directory");
}
/* Reallocating acldata into the required size */
acldata.aces = (fsal_ace_t *) gsh_realloc(acldata.aces,
new_count*sizeof(fsal_ace_t));
acldata.naces = new_count;
fsalattr->acl = nfs4_acl_new_entry(&acldata, &aclstatus);
LogDebug(COMPONENT_FSAL, "fsal acl = %p, fsal_acl_status = %u",
fsalattr->acl, aclstatus);
if (fsalattr->acl == NULL) {
LogCrit(COMPONENT_FSAL,
"failed to create a new acl entry");
return fsalstat(ERR_FSAL_NOMEM, -1);
}
fsalattr->valid_mask |= ATTR_ACL;
} else {
/* We were asked for ACL but do not support. */
status = fsalstat(ERR_FSAL_NOTSUPP, 0);
}
return status;
}
/*
----------------------------------------------------------------------------------------------------------------
appends_and_extends_string
--------------------------
Appends a char* giving a char* to append and an optionnal separator (NULL if no separator)
char** p_io_string : pointer on a char* that will be appended and maybe extended if no enough memory allocated
size_t* p_current_length : pointer on a size_t structure that contains the current size of the char* that will be write
size_t inc_length : the incrementation step that could be use to extend char* memory allocation
char* string2append : string to append
char* separator : separator to put between current char* and sting to append
return 0 if it succeeds
-1 otherwise
----------------------------------------------------------------------------------------------------------------
*/
int nodelist_common_string_appends_and_extends(char **p_io_string,
size_t * p_current_length,
size_t inc_length,
char *string2append,
char *separator)
{
int fstatus = -1;
size_t new_output_length;
size_t new_string_length;
size_t output_string_length;
size_t separator_length;
size_t append_length;
char *default_separator = " ";
char *local_separator;
if (*p_io_string != NULL && string2append != NULL) {
if (separator != NULL)
local_separator = separator;
else
local_separator = default_separator;
if (strlen(*p_io_string) == 0)
local_separator = "";
output_string_length = strlen(*p_io_string);
separator_length = strlen(local_separator);
append_length = strlen(string2append);
new_string_length =
output_string_length + separator_length + append_length;
if (new_string_length > *p_current_length) {
new_output_length = *p_current_length;
while (new_string_length > new_output_length)
new_output_length += inc_length;
*p_io_string =
gsh_realloc(*p_io_string,
(new_output_length + 1) *
sizeof(char));
if (*p_io_string != NULL)
*p_current_length = new_output_length;
else
*p_current_length = 0;
}
if (*p_io_string != NULL) {
strncpy(*p_io_string + output_string_length,
local_separator, separator_length);
strncpy(*p_io_string + output_string_length +
separator_length, string2append, append_length);
*(*p_io_string + output_string_length +
separator_length + append_length) = '\0';
fstatus = 0;
}
}
return fstatus;
}
