diff options
Diffstat (limited to 'booster/src/booster.c')
| -rw-r--r-- | booster/src/booster.c | 322 |
1 files changed, 86 insertions, 236 deletions
diff --git a/booster/src/booster.c b/booster/src/booster.c index cb35be519d3..5137e8e2ffb 100644 --- a/booster/src/booster.c +++ b/booster/src/booster.c @@ -74,6 +74,11 @@ extern int pipe (int filedes[2]); #define UNIX_PATH_MAX 108 #endif +typedef enum { + BOOSTER_OPEN, + BOOSTER_CREAT +} booster_op_t; + struct _inode; struct _dict; struct _fd { @@ -213,15 +218,7 @@ struct booster_mount { }; typedef struct booster_mount booster_mount_t; -struct booster_mount_table { - pthread_mutex_t lock; - struct list_head *mounts; - int32_t hash_size; -}; -typedef struct booster_mount_table booster_mount_table_t; - static fdtable_t *booster_glfs_fdtable = NULL; -static booster_mount_table_t *booster_mount_table = NULL; extern int booster_configure (char *confpath); /* This is dup'ed every time VMP open/creat wants a new fd. @@ -250,55 +247,6 @@ booster_get_process_fd () #define BOOSTER_LOG_ENV_VAR "GLUSTERFS_BOOSTER_LOG" -static int32_t -__booster_put_handle (booster_mount_table_t *table, dev_t st_dev, - glusterfs_handle_t handle) -{ - int32_t hash = 0; - booster_mount_t *mount = NULL, *tmp = NULL; - int32_t ret = 0; - - mount = calloc (1, sizeof (*mount)); - if (!mount) { - return -1; - } - - // ERR_ABORT (mount); - INIT_LIST_HEAD (&mount->device_list); - mount->st_dev = st_dev; - mount->handle = handle; - - hash = st_dev % table->hash_size; - list_for_each_entry (tmp, &table->mounts[hash], device_list) { - if (tmp->st_dev == st_dev) { - ret = -1; - errno = EEXIST; - goto out; - } - } - - list_add (&mount->device_list, &table->mounts[hash]); -out: - if (ret == -1) - free (mount); - return ret; -} - -static int32_t -booster_put_handle (booster_mount_table_t *table,dev_t st_dev, - glusterfs_handle_t handle) -{ - int32_t ret = 0; - pthread_mutex_lock (&table->lock); - { - ret = __booster_put_handle (table, st_dev, handle); - } - pthread_mutex_unlock (&table->lock); - - return ret; -} - - static inline glusterfs_file_t booster_get_glfs_fd (fdtable_t *fdtable, int fd) { @@ -331,65 +279,28 @@ booster_put_fd (fdtable_t *fdtable, int fd) gf_fd_put (fdtable, fd); } - -static glusterfs_handle_t -__booster_get_handle (booster_mount_table_t *table, dev_t st_dev) -{ - int32_t hash = 0; - booster_mount_t *mount = NULL; - glusterfs_handle_t handle = NULL; - - hash = st_dev % table->hash_size; - list_for_each_entry (mount, &table->mounts[hash], device_list) { - if (mount->st_dev == st_dev) { - handle = mount->handle; - break; - } - } - - return handle; -} - -static glusterfs_handle_t -booster_get_handle (booster_mount_table_t *table, dev_t st_dev) -{ - glusterfs_handle_t handle = NULL; - - pthread_mutex_lock (&table->lock); - { - handle = __booster_get_handle (table, st_dev); - } - pthread_mutex_unlock (&table->lock); - - return handle; -} - - -/* MBP - Mount Point Bypass, - * the approach used to bypass the already mounted glusterfs and instead - * use libglusterfsclient. - */ -glusterfs_handle_t -mbp_open (int fd, dev_t file_devno) +void +do_open (int fd, const char *pathname, int flags, mode_t mode, booster_op_t op) { - char *specfile = NULL; - FILE *specfp = NULL; - int32_t file_size = -1; - int ret = -1; - char *logfile = NULL; - glusterfs_handle_t handle = NULL; - - glusterfs_init_params_t ctx = { - .loglevel = "critical", + char *specfile = NULL; + char *mount_point = NULL; + int32_t size = 0; + int32_t ret = -1; + FILE *specfp = NULL; + glusterfs_file_t fh = NULL; + char *logfile = NULL; + glusterfs_init_params_t iparams = { + .loglevel = "error", .lookup_timeout = 600, .stat_timeout = 600, }; - - file_size = fgetxattr (fd, "user.glusterfs-booster-volfile", NULL, 0); - if (file_size == -1) - return NULL; - - specfile = calloc (1, file_size); + + size = fgetxattr (fd, "user.glusterfs-booster-volfile", NULL, 0); + if (size == -1) { + goto out; + } + + specfile = calloc (1, size); if (!specfile) { fprintf (stderr, "cannot allocate memory: %s\n", strerror (errno)); @@ -397,108 +308,90 @@ mbp_open (int fd, dev_t file_devno) } ret = fgetxattr (fd, "user.glusterfs-booster-volfile", specfile, - file_size); - if (ret == -1) + size); + if (ret == -1) { goto out; - + } + specfp = tmpfile (); - if (!specfp) + if (!specfp) { goto out; + } - ret = fwrite (specfile, file_size, 1, specfp); - if (ret != 1) + ret = fwrite (specfile, size, 1, specfp); + if (ret != 1) { goto out; - + } + fseek (specfp, 0L, SEEK_SET); + + size = fgetxattr (fd, "user.glusterfs-booster-mount", NULL, 0); + if (size == -1) { + goto out; + } + + mount_point = calloc (size, sizeof (char)); + if (!mount_point) { + goto out; + } + + ret = fgetxattr (fd, "user.glusterfs-booster-mount", mount_point, size); + if (ret == -1) { + goto out; + } + logfile = getenv (BOOSTER_LOG_ENV_VAR); if (logfile) { if (strlen (logfile) > 0) - ctx.logfile = strdup (logfile); + iparams.logfile = strdup (logfile); else - ctx.logfile = strdup (BOOSTER_DEFAULT_LOG); - } else - ctx.logfile = strdup (BOOSTER_DEFAULT_LOG); + iparams.logfile = strdup (BOOSTER_DEFAULT_LOG); + } else { + iparams.logfile = strdup (BOOSTER_DEFAULT_LOG); + } - ctx.specfp = specfp; - handle = glusterfs_init (&ctx); - if (!handle) - goto out; + iparams.specfp = specfp; - ret = __booster_put_handle (booster_mount_table, file_devno, handle); - if (ret == -1) { - glusterfs_fini (handle); + ret = glusterfs_mount (mount_point, &iparams); + if ((ret == -1) && (errno != EEXIST)) { goto out; } -out: - if (specfile) - free (specfile); - - if (specfp) - fclose (specfp); - - if (ctx.logfile) - free (ctx.logfile); + switch (op) { + case BOOSTER_OPEN: + fh = glusterfs_open (pathname, flags, mode); + break; - return handle; -} + case BOOSTER_CREAT: + fh = glusterfs_creat (pathname, mode); + break; + } -void -do_open (int fd, int flags, mode_t mode) -{ - glusterfs_handle_t handle; - struct stat st = {0,}; - int32_t ret = -1; + if (!fh) { + goto out; + } - ret = fstat (fd, &st); - if (ret == -1) { - return; + if (booster_get_unused_fd (booster_glfs_fdtable, fh, fd) == -1) { + goto out; } + fh = NULL; - if (!booster_mount_table) { - return; +out: + if (specfile) { + free (specfile); } + if (specfp) { + fclose (specfp); + } - /* We need to have this big lock to prevent multiple threads - * trying to create glusterfs contexts in parallel. The vol file - * parser uses global variables which end up in inconsistent - * state when modified by different threads without a sync mech - * among them. - * - * We could reduce the lock granularity by locking only when the - * glusterfs_init is called inside mbp_open but that requires a - * new global lock, that I am not comfortable with. We're better off - * using the mount table lock that fits in with the purpose of - * maintaining multiple glusterfs contexts in a single process. - */ - pthread_mutex_lock (&booster_mount_table->lock); - { - handle = __booster_get_handle (booster_mount_table, st.st_dev); - if (!handle) - handle = mbp_open (fd, st.st_dev); - } - pthread_mutex_unlock (&booster_mount_table->lock); - - if (handle) { - glusterfs_file_t glfs_fd; - char path [UNIX_PATH_MAX]; - ret = fgetxattr (fd, "user.glusterfs-booster-path", path, - UNIX_PATH_MAX); - if (ret == -1) { - return; - } + if (mount_point) { + free (mount_point); + } - glfs_fd = glusterfs_glh_open (handle, path, flags, mode); - if (glfs_fd) { - ret = booster_get_unused_fd (booster_glfs_fdtable, - glfs_fd, fd); - if (ret == -1) { - glusterfs_close (glfs_fd); - return; - } - } - } + if (fh) { + glusterfs_close (fh); + } return; } @@ -610,8 +503,7 @@ booster_open (const char *pathname, int use64, int flags, ...) ret = my_open (pathname, flags); if (ret != -1) { - flags &= ~ GF_O_CREAT; - do_open (ret, flags, mode); + do_open (ret, pathname, flags, mode, BOOSTER_OPEN); } out: @@ -714,7 +606,8 @@ creat (const char *pathname, mode_t mode) ret = real_creat (pathname, mode); if (ret != -1) { - do_open (ret, GF_O_WRONLY | GF_O_TRUNC, mode); + do_open (ret, pathname, GF_O_WRONLY | GF_O_TRUNC, mode, + BOOSTER_CREAT); } out: @@ -1138,7 +1031,6 @@ fchown (int fd, uid_t owner, gid_t group) static int booster_init (void) { - int i = 0; char *booster_conf_path = NULL; int ret = -1; int pipefd[2]; @@ -1150,28 +1042,6 @@ booster_init (void) goto err; } - booster_mount_table = calloc (1, sizeof (*booster_mount_table)); - if (!booster_mount_table) { - fprintf (stderr, "cannot allocate memory: %s\n", - strerror (errno)); - goto err; - } - - pthread_mutex_init (&booster_mount_table->lock, NULL); - booster_mount_table->hash_size = MOUNT_TABLE_HASH_SIZE; - booster_mount_table->mounts = calloc (booster_mount_table->hash_size, - sizeof (*booster_mount_table->mounts)); - if (!booster_mount_table->mounts) { - fprintf (stderr, "cannot allocate memory: %s\n", - strerror (errno)); - goto err; - } - - for (i = 0; i < booster_mount_table->hash_size; i++) - { - INIT_LIST_HEAD (&booster_mount_table->mounts[i]); - } - if (pipe (pipefd) == -1) goto err; @@ -1207,9 +1077,6 @@ err: static void booster_cleanup (void) { - int i; - booster_mount_t *mount = NULL, *tmp = NULL; - /* gf_fd_fdtable_destroy (booster_glfs_fdtable);*/ /*for (i=0; i < booster_glfs_fdtable->max_fds; i++) { if (booster_glfs_fdtable->fds[i]) { @@ -1221,24 +1088,7 @@ booster_cleanup (void) free (booster_glfs_fdtable); booster_glfs_fdtable = NULL; - pthread_mutex_lock (&booster_mount_table->lock); - { - for (i = 0; i < booster_mount_table->hash_size; i++) - { - list_for_each_entry_safe (mount, tmp, - &booster_mount_table->mounts[i], device_list) { - list_del (&mount->device_list); - glusterfs_fini (mount->handle); - free (mount); - } - } - free (booster_mount_table->mounts); - } - pthread_mutex_unlock (&booster_mount_table->lock); - glusterfs_reset (); - free (booster_mount_table); - booster_mount_table = NULL; } int |