From fa0ad231745846918b2625d0e1a89c0a5c3c24dc Mon Sep 17 00:00:00 2001 From: Jiffin Tony Thottan Date: Wed, 11 Mar 2015 14:20:48 +0530 Subject: libgfapi : anonymous fd support Anonymous fd's are floating fd assigned to a glusterfs client without a explicit file open. Here either it will create a new anonymous fd or existing anonymous fd in the client stack for requested file.The anonymous fd's are mainly used for IO's. This patch introduces two api's glfs_h_anonymous_read and glfs_h_anonymous_write which performs read and write respectively Change-Id: Id646f2220e8387b2f8bb244c848dc1db6761444f BUG: 1204651 Signed-off-by: Jiffin Tony Thottan Reviewed-by: Niels de Vos Reviewed-on: http://review.gluster.org/9971 Tested-by: Gluster Build System --- api/src/glfs-handleops.c | 48 ++++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 48 insertions(+) (limited to 'api/src/glfs-handleops.c') diff --git a/api/src/glfs-handleops.c b/api/src/glfs-handleops.c index 4a544f7c905..2793e1cb118 100644 --- a/api/src/glfs-handleops.c +++ b/api/src/glfs-handleops.c @@ -1962,3 +1962,51 @@ pub_glfs_h_acl_set (struct glfs *fs, struct glfs_object *object, #endif GFAPI_SYMVER_PUBLIC_DEFAULT(glfs_h_acl_set, 3.7.0); GFAPI_SYMVER_PUBLIC_DEFAULT(glfs_h_acl_get, 3.7.0); + +/* The API to perform read using anonymous fd */ +ssize_t +pub_glfs_h_anonymous_read (struct glfs *fs, struct glfs_object *object, + const void *buf, size_t count, off_t offset) +{ + struct iovec iov = {0, }; + ssize_t ret = 0; + + /* validate in args */ + if ((fs == NULL) || (object == NULL)) { + errno = EINVAL; + return -1; + } + + iov.iov_base = (void *) buf; + iov.iov_len = count; + + ret = glfs_anonymous_preadv (fs, object, &iov, 1, offset, 0); + + return ret; +} + +GFAPI_SYMVER_PUBLIC_DEFAULT(glfs_h_anonymous_read, 3.7.0); + +/* The API to perform write using anonymous fd */ +ssize_t +pub_glfs_h_anonymous_write (struct glfs *fs, struct glfs_object *object, + const void *buf, size_t count, off_t offset) +{ + struct iovec iov = {0, }; + ssize_t ret = 0; + + /* validate in args */ + if ((fs == NULL) || (object == NULL)) { + errno = EINVAL; + return -1; + } + + iov.iov_base = (void *) buf; + iov.iov_len = count; + + ret = glfs_anonymous_pwritev (fs, object, &iov, 1, offset, 0); + + return ret; +} + +GFAPI_SYMVER_PUBLIC_DEFAULT(glfs_h_anonymous_write, 3.7.0); -- cgit