diff options
Diffstat (limited to 'source3/modules/onefs_config.c')
| -rw-r--r-- | source3/modules/onefs_config.c | 276 |
1 files changed, 276 insertions, 0 deletions
diff --git a/source3/modules/onefs_config.c b/source3/modules/onefs_config.c new file mode 100644 index 0000000000..06f4b16ac1 --- /dev/null +++ b/source3/modules/onefs_config.c @@ -0,0 +1,276 @@ +/* + * Unix SMB/CIFS implementation. + * Support for OneFS + * + * Copyright (C) Todd Stecher, 2009 + * Copyright (C) Tim Prouty, 2009 + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 3 of the License, or + * (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, see <http://www.gnu.org/licenses/>. + */ + +#include "includes.h" +#include "onefs_config.h" + +#include <ifs/ifs_syscalls.h> + +#define ONEFS_DATA_FASTBUF 10 + +struct onefs_vfs_share_config vfs_share_config[ONEFS_DATA_FASTBUF]; +struct onefs_vfs_share_config *pvfs_share_config; + +static void onefs_load_faketimestamp_config(struct connection_struct *conn, + struct onefs_vfs_share_config *cfg) +{ + const char **parm; + int snum = SNUM(conn); + + parm = lp_parm_string_list(snum, PARM_ONEFS_TYPE, PARM_ATIME_NOW, + PARM_ATIME_NOW_DEFAULT); + + if (parm) { + cfg->init_flags |= ONEFS_VFS_CONFIG_FAKETIMESTAMPS; + set_namearray(&cfg->atime_now_list,*parm); + } + + parm = lp_parm_string_list(snum, PARM_ONEFS_TYPE, PARM_CTIME_NOW, + PARM_CTIME_NOW_DEFAULT); + + if (parm) { + cfg->init_flags |= ONEFS_VFS_CONFIG_FAKETIMESTAMPS; + set_namearray(&cfg->ctime_now_list,*parm); + } + + parm = lp_parm_string_list(snum, PARM_ONEFS_TYPE, PARM_MTIME_NOW, + PARM_MTIME_NOW_DEFAULT); + + if (parm) { + cfg->init_flags |= ONEFS_VFS_CONFIG_FAKETIMESTAMPS; + set_namearray(&cfg->mtime_now_list,*parm); + } + + parm = lp_parm_string_list(snum, PARM_ONEFS_TYPE, PARM_ATIME_STATIC, + PARM_ATIME_STATIC_DEFAULT); + + if (parm) { + cfg->init_flags |= ONEFS_VFS_CONFIG_FAKETIMESTAMPS; + set_namearray(&cfg->atime_static_list,*parm); + } + + parm = lp_parm_string_list(snum, PARM_ONEFS_TYPE, PARM_MTIME_STATIC, + PARM_MTIME_STATIC_DEFAULT); + + if (parm) { + cfg->init_flags |= ONEFS_VFS_CONFIG_FAKETIMESTAMPS; + set_namearray(&cfg->mtime_static_list,*parm); + } + + cfg->atime_slop = lp_parm_int(snum, PARM_ONEFS_TYPE, PARM_ATIME_SLOP, + PARM_ATIME_SLOP_DEFAULT); + cfg->ctime_slop = lp_parm_int(snum, PARM_ONEFS_TYPE, PARM_CTIME_SLOP, + PARM_CTIME_SLOP_DEFAULT); + cfg->mtime_slop = lp_parm_int(snum, PARM_ONEFS_TYPE, PARM_MTIME_SLOP, + PARM_MTIME_SLOP_DEFAULT); +} + +/** + * Set onefs-specific vfs global config parameters. + * + * Since changes in these parameters require calling syscalls, we only want to + * call them when the configuration actually changes. + */ +static void onefs_load_global_config(connection_struct *conn) +{ + static struct onefs_vfs_global_config global_config; + bool dot_snap_child_accessible; + bool dot_snap_child_visible; + bool dot_snap_root_accessible; + bool dot_snap_root_visible; + bool dot_snap_tilde; + bool reconfig_dso = false; + bool reconfig_tilde = false; + + /* Check if this is the first time setting the config options. */ + if (!(global_config.init_flags & ONEFS_VFS_CONFIG_INITIALIZED)) { + global_config.init_flags |= ONEFS_VFS_CONFIG_INITIALIZED; + + /* Set process encoding */ + onefs_sys_config_enc(); + + reconfig_dso = true; + reconfig_tilde = true; + } + + /* Get the dot snap options from the conf. */ + dot_snap_child_accessible = + lp_parm_bool(SNUM(conn), PARM_ONEFS_TYPE, + PARM_DOT_SNAP_CHILD_ACCESSIBLE, + PARM_DOT_SNAP_CHILD_ACCESSIBLE_DEFAULT); + dot_snap_child_visible = + lp_parm_bool(SNUM(conn), PARM_ONEFS_TYPE, + PARM_DOT_SNAP_CHILD_VISIBLE, + PARM_DOT_SNAP_CHILD_VISIBLE_DEFAULT); + dot_snap_root_accessible = + lp_parm_bool(SNUM(conn), PARM_ONEFS_TYPE, + PARM_DOT_SNAP_ROOT_ACCESSIBLE, + PARM_DOT_SNAP_ROOT_ACCESSIBLE_DEFAULT); + dot_snap_root_visible = + lp_parm_bool(SNUM(conn), PARM_ONEFS_TYPE, + PARM_DOT_SNAP_ROOT_VISIBLE, + PARM_DOT_SNAP_ROOT_VISIBLE_DEFAULT); + dot_snap_tilde = + lp_parm_bool(SNUM(conn), PARM_ONEFS_TYPE, + PARM_DOT_SNAP_TILDE, + PARM_DOT_SNAP_TILDE_DEFAULT); + + /* Check if any of the dot snap options need updating. */ + if (dot_snap_child_accessible != + global_config.dot_snap_child_accessible) { + global_config.dot_snap_child_accessible = + dot_snap_child_accessible; + reconfig_dso = true; + } + if (dot_snap_child_visible != + global_config.dot_snap_child_visible) { + global_config.dot_snap_child_visible = + dot_snap_child_visible; + reconfig_dso = true; + } + if (dot_snap_root_accessible != + global_config.dot_snap_root_accessible) { + global_config.dot_snap_root_accessible = + dot_snap_root_accessible; + reconfig_dso = true; + } + if (dot_snap_root_visible != + global_config.dot_snap_root_visible) { + global_config.dot_snap_root_visible = + dot_snap_root_visible; + reconfig_dso = true; + } + if (dot_snap_tilde != global_config.dot_snap_tilde) { + global_config.dot_snap_tilde = dot_snap_tilde; + reconfig_tilde = true; + } + + /* If a dot snap option has changed update the process. */ + if (reconfig_dso) { + onefs_sys_config_snap_opt(&global_config); + } + + /* If the dot snap tilde option has changed update the process. */ + if (reconfig_tilde) { + onefs_sys_config_tilde(&global_config); + } +} + +int onefs_load_config(connection_struct *conn) +{ + int snum = SNUM(conn); + int share_count = lp_numservices(); + + /* Share config */ + if (!pvfs_share_config) { + + if (share_count <= ONEFS_DATA_FASTBUF) + pvfs_share_config = vfs_share_config; + else { + pvfs_share_config = + SMB_MALLOC_ARRAY(struct onefs_vfs_share_config, + share_count); + if (!pvfs_share_config) { + errno = ENOMEM; + return -1; + } + + memset(pvfs_share_config, 0, + (sizeof(struct onefs_vfs_share_config) * + share_count)); + } + } + + if ((pvfs_share_config[snum].init_flags & + ONEFS_VFS_CONFIG_INITIALIZED) == 0) { + pvfs_share_config[snum].init_flags = + ONEFS_VFS_CONFIG_INITIALIZED; + onefs_load_faketimestamp_config(conn, + &pvfs_share_config[snum]); + } + + /* Global config */ + onefs_load_global_config(conn); + + return 0; +} + +bool onefs_get_config(int snum, int config_type, + struct onefs_vfs_share_config *cfg) +{ + if (vfs_share_config[snum].init_flags & config_type) + *cfg = vfs_share_config[snum]; + else + return false; + + return true; +} + + +/** + * Set the per-process encoding, ignoring errors. + */ +void onefs_sys_config_enc(void) +{ + int ret; + + ret = enc_set_proc(ENC_UTF8); + if (ret) { + DEBUG(0, ("Setting process encoding failed: %s", + strerror(errno))); + } +} + +/** + * Set the per-process .snpashot directory options, ignoring errors. + */ +void onefs_sys_config_snap_opt(struct onefs_vfs_global_config *global_config) +{ + struct ifs_dotsnap_options dso; + int ret; + + dso.per_proc = 1; + dso.sub_accessible = global_config->dot_snap_child_accessible; + dso.sub_visible = global_config->dot_snap_child_visible; + dso.root_accessible = global_config->dot_snap_root_accessible; + dso.root_visible = global_config->dot_snap_root_visible; + + ret = ifs_set_dotsnap_options(&dso); + if (ret) { + DEBUG(0, ("Setting snapshot visibility/accessibility " + "failed: %s", strerror(errno))); + } +} + +/** + * Set the per-process flag saying whether or not to accept ~snapshot + * as an alternative name for .snapshot directories. + */ +void onefs_sys_config_tilde(struct onefs_vfs_global_config *global_config) +{ + int ret; + + ret = ifs_tilde_snapshot(global_config->dot_snap_tilde); + if (ret) { + DEBUG(0, ("Setting snapshot tilde failed: %s", + strerror(errno))); + } +} |