diff options
Diffstat (limited to 'xlators/storage/posix/src')
| -rw-r--r-- | xlators/storage/posix/src/posix-messages.h | 8 | ||||
| -rw-r--r-- | xlators/storage/posix/src/posix.c | 103 | ||||
| -rw-r--r-- | xlators/storage/posix/src/posix.h | 2 |
3 files changed, 110 insertions, 3 deletions
diff --git a/xlators/storage/posix/src/posix-messages.h b/xlators/storage/posix/src/posix-messages.h index 9916aed92cd..9f267dfe0d9 100644 --- a/xlators/storage/posix/src/posix-messages.h +++ b/xlators/storage/posix/src/posix-messages.h @@ -893,6 +893,14 @@ * */ +#define P_MSG_BUFFER_OVERFLOW (POSIX_COMP_BASE + 105) +/*! + * @messageid + * @diagnosis + * @recommendedaction + * + */ + /*------------*/ #define glfs_msg_end_x GLFS_MSGID_END, "Invalid: End of messages" diff --git a/xlators/storage/posix/src/posix.c b/xlators/storage/posix/src/posix.c index 5e9dbf7ee5c..36d2c857835 100644 --- a/xlators/storage/posix/src/posix.c +++ b/xlators/storage/posix/src/posix.c @@ -3266,8 +3266,10 @@ posix_setxattr (call_frame_t *frame, xlator_t *this, int32_t op_ret = -1; int32_t op_errno = 0; char * real_path = NULL; + char *acl_xattr = NULL; struct iatt stbuf = {0}; int32_t ret = 0; + size_t acl_size = 0; dict_t *xattr = NULL; posix_xattr_filler_t filler = {0,}; @@ -3306,6 +3308,10 @@ posix_setxattr (call_frame_t *frame, xlator_t *this, goto out; } + xattr = dict_new(); + if (!xattr) + goto out; + /* * FIXFIX: Send the stbuf info in the xdata for now * This is used by DHT to redirect FOPs if the file is being migrated @@ -3316,10 +3322,98 @@ posix_setxattr (call_frame_t *frame, xlator_t *this, if (ret) goto out; - xattr = dict_new(); - if (!xattr) + ret = posix_set_iatt_in_dict (xattr, &stbuf); + } + +/* + * ACL can be set on a file/folder using GF_POSIX_ACL_*_KEY xattrs which + * won't aware of access-control xlator. To update its context correctly, + * POSIX_ACL_*_XATTR stored in xdata which is send in the call_back path. + */ + if (dict_get (dict, GF_POSIX_ACL_ACCESS)) { + + /* + * The size of buffer will be know after calling sys_lgetxattr, + * so first we allocate buffer with large size(~4k), then we + * reduced into required size using GF_REALLO(). + */ + acl_xattr = GF_CALLOC (1, ACL_BUFFER_MAX, gf_posix_mt_char); + if (!acl_xattr) { + ret = -1; goto out; - ret = posix_set_iatt_in_dict (xattr, &stbuf); + } + + acl_size = sys_lgetxattr (real_path, POSIX_ACL_ACCESS_XATTR, + acl_xattr, ACL_BUFFER_MAX); + + if (acl_size < 0) { + gf_msg (this->name, GF_LOG_WARNING, errno, + P_MSG_XATTR_FAILED, "Posix acl is not set " + "properly at the backend"); + ret = -1; + goto out; + } + + /* If acl_size is more than max buffer size, just ignore it */ + if (acl_size >= ACL_BUFFER_MAX) { + gf_msg (this->name, GF_LOG_WARNING, ENOMEM, + P_MSG_BUFFER_OVERFLOW, "size of acl is more" + "than the buffer"); + ret = -1; + goto out; + } + + acl_xattr = GF_REALLOC (acl_xattr, acl_size); + ret = dict_set_bin (xattr, POSIX_ACL_ACCESS_XATTR, + acl_xattr, acl_size); + if (ret) { + gf_msg (this->name, GF_LOG_WARNING, 0, + P_MSG_SET_XDATA_FAIL, "failed to set" + "xdata for acl"); + ret = -1; + goto out; + } + } + + GF_FREE (acl_xattr); + acl_xattr = NULL; + + if (dict_get (dict, GF_POSIX_ACL_DEFAULT)) { + + acl_xattr = GF_CALLOC (1, ACL_BUFFER_MAX, gf_posix_mt_char); + if (!acl_xattr) { + ret = -1; + goto out; + } + acl_size = sys_lgetxattr (real_path, POSIX_ACL_DEFAULT_XATTR, + acl_xattr, ACL_BUFFER_MAX); + + if (acl_size < 0) { + gf_msg (this->name, GF_LOG_WARNING, errno, + P_MSG_XATTR_FAILED, "Posix acl is not set " + "properly at the backend"); + ret = -1; + goto out; + } + + if (acl_size >= ACL_BUFFER_MAX) { + gf_msg (this->name, GF_LOG_WARNING, ENOMEM, + P_MSG_BUFFER_OVERFLOW, "size of acl is more" + "than the buffer"); + ret = -1; + goto out; + } + + acl_xattr = GF_REALLOC (acl_xattr, acl_size); + ret = dict_set_bin (xattr, POSIX_ACL_DEFAULT_XATTR, + acl_xattr, acl_size); + if (ret) { + gf_msg (this->name, GF_LOG_WARNING, 0, + P_MSG_SET_XDATA_FAIL, "failed to set" + "xdata for acl"); + ret = -1; + goto out; + } } out: SET_TO_OLD_FS_ID (); @@ -3329,6 +3423,9 @@ out: if (xattr) dict_unref(xattr); + if (acl_xattr) + GF_FREE (acl_xattr); + return 0; } diff --git a/xlators/storage/posix/src/posix.h b/xlators/storage/posix/src/posix.h index b85338e930e..cc7ed0402fe 100644 --- a/xlators/storage/posix/src/posix.h +++ b/xlators/storage/posix/src/posix.h @@ -48,6 +48,8 @@ #define VECTOR_SIZE 64 * 1024 /* vector size 64KB*/ #define MAX_NO_VECT 1024 +#define ACL_BUFFER_MAX 4096 /* size of character buffer */ + #define LINKTO "trusted.glusterfs.dht.linkto" #define POSIX_GFID_HANDLE_SIZE(base_path_len) (base_path_len + SLEN("/") \ |