From fa4710bb8fbc852971d763d8727e3755436ea9c8 Mon Sep 17 00:00:00 2001 From: Soumya Koduri Date: Wed, 10 Oct 2018 21:37:07 +0530 Subject: gfapi: Bug fixes in leases processing code-path This patch fixes below issues in gfapi lease code-path * 'glfs_setfsleasid' should allow NULL input to be able to reset leaseid * Applications should be allowed to (un)register for upcall notifications of type GLFS_EVENT_LEASE_RECALL * APIs added to read contents of GLFS_EVENT_LEASE_RECALL argument which is of type "struct glfs_upcall_lease" This is backport of below mainline path - https://review.gluster.org/#/c/glusterfs/+/21391 Change-Id: I3320ddf235cc82fad561e13b9457ebd64db6c76b updates: #350 Signed-off-by: Soumya Koduri --- api/src/gfapi.aliases | 2 ++ api/src/gfapi.map | 5 +++++ api/src/glfs-fops.c | 2 +- api/src/glfs-handles.h | 20 +++++++++++++++++++ api/src/glfs.c | 53 ++++++++++++++++++++++++++++---------------------- api/src/glfs.h | 16 ++++++++++----- 6 files changed, 69 insertions(+), 29 deletions(-) (limited to 'api') diff --git a/api/src/gfapi.aliases b/api/src/gfapi.aliases index 74053b9af6a..fd4f437ccc3 100644 --- a/api/src/gfapi.aliases +++ b/api/src/gfapi.aliases @@ -174,3 +174,5 @@ _pub_glfs_setfsleaseid _glfs_setfsleaseid$GFAPI_4.0.0 _pub_glfs_file_lock _glfs_file_lock$GFAPI_4.0.0 _pub_glfs_lease _glfs_lease$GFAPI_4.0.0 _pub_glfs_h_lease _glfs_h_lease$GFAPI_4.0.0 +_pub_glfs_upcall_lease_get_object _glfs_upcall_lease_get_object$GFAPI_4.1.6 +_pub_glfs_upcall_lease_get_lease_type _glfs_upcall_lease_get_lease_type$GFAPI_4.1.6 diff --git a/api/src/gfapi.map b/api/src/gfapi.map index 4984479c57a..6dd907d2122 100644 --- a/api/src/gfapi.map +++ b/api/src/gfapi.map @@ -228,3 +228,8 @@ GFAPI_4.0.0 { glfs_lease; glfs_h_lease; } GFAPI_3.13.0; + +GFAPI_4.1.6 { + glfs_upcall_lease_get_object; + glfs_upcall_lease_get_lease_type; +} GFAPI_4.0.0; diff --git a/api/src/glfs-fops.c b/api/src/glfs-fops.c index f243999c0c8..50f32fae6f6 100644 --- a/api/src/glfs-fops.c +++ b/api/src/glfs-fops.c @@ -4841,7 +4841,7 @@ glfs_recall_lease_upcall (struct glfs *fs, up_lease_arg->lease_type = recall_lease->lease_type; - up_arg->reason = GF_UPCALL_RECALL_LEASE; + up_arg->reason = GLFS_UPCALL_RECALL_LEASE; up_arg->event = up_lease_arg; up_arg->free_event = glfs_free_upcall_lease; diff --git a/api/src/glfs-handles.h b/api/src/glfs-handles.h index 58ef85a9f47..6dfb027a9a4 100644 --- a/api/src/glfs-handles.h +++ b/api/src/glfs-handles.h @@ -337,6 +337,26 @@ struct glfs_object * glfs_h_find_handle (struct glfs *fs, unsigned char *handle, int len) __THROW GFAPI_PUBLIC(glfs_h_lease, 4.0.0); + +/* Functions for getting details about the glfs_upcall_lease + * + * None of the pointers returned by the below functions should be free()'d, + * glfs_free()'d or glfs_h_close()'d by the application. + * + * Releasing of the structures is done by passing the glfs_upcall pointer + * to glfs_free(). + */ +struct glfs_upcall_lease; +typedef struct glfs_upcall_lease glfs_upcall_lease_t; + +glfs_object_t * +glfs_upcall_lease_get_object(glfs_upcall_lease_t *arg) __THROW + GFAPI_PUBLIC(glfs_upcall_lease_get_object, 4.1.6); + +uint32_t +glfs_upcall_lease_get_lease_type(glfs_upcall_lease_t *arg) __THROW + GFAPI_PUBLIC(glfs_upcall_lease_get_lease_type, 4.1.6); + __END_DECLS #endif /* !_GLFS_HANDLES_H */ diff --git a/api/src/glfs.c b/api/src/glfs.c index cc84842f286..508191ec8b1 100644 --- a/api/src/glfs.c +++ b/api/src/glfs.c @@ -576,14 +576,17 @@ pub_glfs_setfsleaseid (glfs_leaseid_t leaseid) int ret = -1; char *gleaseid = NULL; - GF_VALIDATE_OR_GOTO (THIS->name, leaseid, out); - gleaseid = gf_leaseid_get(); if (gleaseid) { - memcpy (gleaseid, leaseid, LEASE_ID_SIZE); + if (leaseid) + memcpy(gleaseid, leaseid, LEASE_ID_SIZE); + else /* reset leaseid */ + memset(gleaseid, 0, LEASE_ID_SIZE); ret = 0; } -out: + if (ret) + gf_log("glfs", GF_LOG_ERROR, "failed to set leaseid: %s", + strerror(errno)); return ret; } @@ -1566,22 +1569,20 @@ pub_glfs_upcall_inode_get_oldpstat (struct glfs_upcall_inode *arg) } GFAPI_SYMVER_PUBLIC_DEFAULT(glfs_upcall_inode_get_oldpstat, 3.7.16); - -/*struct glfs_object* -pub_glfs_upcall_lease_get_object (struct glfs_upcall_recall_inode *arg) +struct glfs_object * +pub_glfs_upcall_lease_get_object(struct glfs_upcall_lease *arg) { return arg->object; } -GFAPI_SYMVER_PUBLIC_DEFAULT(glfs_upcall_lease_get_object, 4.0.0); -*/ +GFAPI_SYMVER_PUBLIC_DEFAULT(glfs_upcall_lease_get_object, 4.1.6); uint32_t pub_glfs_upcall_lease_get_lease_type (struct glfs_upcall_lease *arg) { return arg->lease_type; } -GFAPI_SYMVER_PUBLIC_DEFAULT(glfs_upcall_lease_get_lease_type, 4.0.0); +GFAPI_SYMVER_PUBLIC_DEFAULT(glfs_upcall_lease_get_lease_type, 4.1.6); /* definitions of the GLFS_SYSRQ_* chars are in glfs.h */ static struct glfs_sysrq_help { @@ -1647,7 +1648,8 @@ pub_glfs_upcall_register (struct glfs *fs, uint32_t event_list, int ret = 0; /* list of supported upcall events */ - uint32_t up_events = GLFS_EVENT_INODE_INVALIDATE; + uint32_t up_events = (GLFS_EVENT_INODE_INVALIDATE | + GLFS_EVENT_RECALL_LEASE); DECLARE_OLD_THIS; __GLFS_ENTRY_VALIDATE_FS (fs, invalid_fs); @@ -1666,18 +1668,20 @@ pub_glfs_upcall_register (struct glfs *fs, uint32_t event_list, goto out; } - /* incase other thread does unregister */ - pthread_mutex_lock (&fs->mutex); + /* in case other thread does unregister */ + pthread_mutex_lock(&fs->mutex); { if (event_list & GLFS_EVENT_INODE_INVALIDATE) { /* @todo: Check if features.cache-invalidation is * enabled. */ - fs->upcall_events |= GF_UPCALL_CACHE_INVALIDATION; - ret |= GF_UPCALL_CACHE_INVALIDATION; - } else if (event_list & GLFS_EVENT_INODE_INVALIDATE) { - fs->upcall_events |= GF_UPCALL_RECALL_LEASE; - ret |= GF_UPCALL_RECALL_LEASE; + fs->upcall_events |= GF_UPCALL_CACHE_INVALIDATION; + ret |= GLFS_EVENT_INODE_INVALIDATE; + } + if (event_list & GLFS_EVENT_RECALL_LEASE) { + /* @todo: Check if features.leases is enabled */ + fs->upcall_events |= GF_UPCALL_RECALL_LEASE; + ret |= GLFS_EVENT_RECALL_LEASE; } /* Override cbk function if existing */ fs->up_cbk = cbk; @@ -1700,7 +1704,8 @@ pub_glfs_upcall_unregister (struct glfs *fs, uint32_t event_list) { int ret = 0; /* list of supported upcall events */ - uint32_t up_events = GLFS_EVENT_INODE_INVALIDATE; + uint32_t up_events = (GLFS_EVENT_INODE_INVALIDATE | + GLFS_EVENT_RECALL_LEASE); DECLARE_OLD_THIS; __GLFS_ENTRY_VALIDATE_FS (fs, invalid_fs); @@ -1719,10 +1724,12 @@ pub_glfs_upcall_unregister (struct glfs *fs, uint32_t event_list) pthread_mutex_lock (&fs->mutex); { - if (event_list & GLFS_EVENT_INODE_INVALIDATE) { - fs->upcall_events &= ~GF_UPCALL_CACHE_INVALIDATION; - ret |= GF_UPCALL_CACHE_INVALIDATION; - } + /* We already checked if event_list contains list of supported + * upcall events. No other specific checks needed as of now for + * unregister */ + fs->upcall_events &= ~(event_list); + ret |= ((event_list == GLFS_EVENT_ANY) ? + up_events : event_list); /* If there are no upcall events registered, reset cbk */ if (fs->upcall_events == 0) { diff --git a/api/src/glfs.h b/api/src/glfs.h index 16eae642906..dd6142757d6 100644 --- a/api/src/glfs.h +++ b/api/src/glfs.h @@ -960,7 +960,8 @@ glfs_upcall_get_fs (struct glfs_upcall *arg) __THROW enum glfs_upcall_reason { GLFS_UPCALL_EVENT_NULL = 0, - GLFS_UPCALL_INODE_INVALIDATE, /* invalidate cache entry */ + GLFS_UPCALL_INODE_INVALIDATE, /* invalidate cache entry */ + GLFS_UPCALL_RECALL_LEASE, /* recall lease */ }; enum glfs_upcall_reason @@ -980,6 +981,7 @@ glfs_upcall_get_reason (struct glfs_upcall *arg) __THROW * ========================================================== * GLFS_UPCALL_EVENT_NULL - NULL * GLFS_UPCALL_INODE_INVALIDATE - struct glfs_upcall_inode + * GLFS_UPCALL_RECALL_LEASE - struct glfs_upcall_lease * * After processing upcall event, glfs_free() should be called on the * glfs_upcall. @@ -1012,8 +1014,9 @@ typedef void (*glfs_upcall_cbk) (struct glfs_upcall *up_arg, void *data); /* * List of upcall events supported by gluster/gfapi */ -#define GLFS_EVENT_INODE_INVALIDATE 0x00000001 /* invalidate cache entry */ -#define GLFS_EVENT_ANY 0xffffffff /* for all the above events */ +#define GLFS_EVENT_INODE_INVALIDATE 0x00000001 /* invalidate cache entry */ +#define GLFS_EVENT_RECALL_LEASE 0x00000002 /* Recall lease */ +#define GLFS_EVENT_ANY 0xffffffff /* for all the above events */ /* * SYNOPSIS @@ -1037,7 +1040,8 @@ typedef void (*glfs_upcall_cbk) (struct glfs_upcall *up_arg, void *data); * * @event_list: List of upcall events to be registered. * Current available values are: - * - GFAPI_UPCALL_INODE_INVALIDATE + * - GLFS_EVENT_INODE_INVALIDATE + * - GLFS_EVENT_RECALL_LEASE * * @cbk: The cbk routine to be invoked incase of any upcall received * @data: Any opaque pointer provided by caller which shall be using while @@ -1071,7 +1075,8 @@ glfs_upcall_register (struct glfs *fs, uint32_t event_list, * * @event_list: List of upcall events to be unregistered. * Current available values are: - * - GFAPI_UPCALL_INODE_INVALIDATE + * - GLFS_EVENT_INODE_INVALIDATE + * - GLFS_EVENT_RECALL_LEASE * RETURN VALUE: * >0: SUCCESS (value contains the events successfully unregistered) * -1: FAILURE @@ -1082,6 +1087,7 @@ glfs_upcall_unregister (struct glfs *fs, uint32_t event_list) __THROW /* Lease Types */ enum glfs_lease_types { + GLFS_LEASE_NONE = 0, GLFS_RD_LEASE = 1, GLFS_RW_LEASE = 2, }; -- cgit