diff options
Diffstat (limited to 'source3/modules/vfs_gpfs.c')
| -rw-r--r-- | source3/modules/vfs_gpfs.c | 166 |
1 files changed, 111 insertions, 55 deletions
diff --git a/source3/modules/vfs_gpfs.c b/source3/modules/vfs_gpfs.c index fa0b4e97a5..1d7cdba014 100644 --- a/source3/modules/vfs_gpfs.c +++ b/source3/modules/vfs_gpfs.c @@ -1,26 +1,24 @@ /* Unix SMB/CIFS implementation. Wrap gpfs calls in vfs functions. - + Copyright (C) Christian Ambach <cambach1@de.ibm.com> 2006 - + Major code contributions by Chetan Shringarpure <chetan.sh@in.ibm.com> and Gomati Mohanan <gomati.mohanan@in.ibm.com> - + 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" @@ -55,14 +53,14 @@ static int vfs_gpfs_setlease(vfs_handle_struct *handle, files_struct *fsp, int leasetype) { int ret; - + START_PROFILE(syscall_linux_setlease); - + if ( linux_set_lease_sighandler(fsp->fh->fd) == -1) return -1; ret = set_gpfs_lease(fsp->fh->fd,leasetype); - + if ( ret < 0 ) { /* This must have come from GPFS not being available */ /* or some other error, hence call the default */ @@ -74,7 +72,64 @@ static int vfs_gpfs_setlease(vfs_handle_struct *handle, files_struct *fsp, return ret; } +static int vfs_gpfs_get_real_filename(struct vfs_handle_struct *handle, + const char *path, + const char *name, + TALLOC_CTX *mem_ctx, + char **found_name) +{ + int result; + char *full_path; + char real_pathname[PATH_MAX+1]; + int buflen; + + full_path = talloc_asprintf(talloc_tos(), "%s/%s", path, name); + if (full_path == NULL) { + errno = ENOMEM; + return -1; + } + + buflen = sizeof(real_pathname) - 1; + + result = smbd_gpfs_get_realfilename_path(full_path, real_pathname, + &buflen); + + TALLOC_FREE(full_path); + + if (result == -1) { + DEBUG(10, ("smbd_gpfs_get_realfilename_path returned %s\n", + strerror(errno))); + return -1; + } + + /* + * GPFS does not necessarily null-terminate the returned path + * but instead returns the buffer length in buflen. + */ + + if (buflen < sizeof(real_pathname)) { + real_pathname[buflen] = '\0'; + } else { + real_pathname[sizeof(real_pathname)-1] = '\0'; + } + + DEBUG(10, ("smbd_gpfs_get_realfilename_path: %s/%s -> %s\n", + path, name, real_pathname)); + + name = strrchr_m(real_pathname, '/'); + if (name == NULL) { + errno = ENOENT; + return -1; + } + + *found_name = talloc_strdup(mem_ctx, name+1); + if (*found_name == NULL) { + errno = ENOMEM; + return -1; + } + return 0; +} static void gpfs_dumpacl(int level, struct gpfs_acl *gacl) { @@ -301,13 +356,13 @@ static bool gpfsacl_process_smbacl(files_struct *fsp, SMB4ACL_T *smbacl) gace->aceType = aceprop->aceType; gace->aceFlags = aceprop->aceFlags; gace->aceMask = aceprop->aceMask; - + /* * GPFS can't distinguish between WRITE and APPEND on * files, so one being set without the other is an * error. Sorry for the many ()'s :-) */ - + if (!fsp->is_directory && ((((gace->aceMask & ACE4_MASK_WRITE) == 0) @@ -323,9 +378,9 @@ static bool gpfsacl_process_smbacl(files_struct *fsp, SMB4ACL_T *smbacl) fsp->fsp_name)); gace->aceMask |= ACE4_MASK_WRITE|ACE4_MASK_APPEND; } - + gace->aceIFlags = (aceprop->flags&SMB_ACE4_ID_SPECIAL) ? ACE4_IFLAG_SPECIAL_ID : 0; - + if (aceprop->flags&SMB_ACE4_ID_SPECIAL) { switch(aceprop->who.special_id) @@ -478,7 +533,7 @@ static SMB_ACL_T gpfsacl_get_posix_acl(const char *path, gpfs_aclType_t type) errno = EINVAL; goto done; } - + DEBUG(10, ("len: %d, level: %d, version: %d, nace: %d\n", pacl->acl_len, pacl->acl_level, pacl->acl_version, pacl->acl_nace)); @@ -497,7 +552,6 @@ static SMB_ACL_T gpfsacl_get_posix_acl(const char *path, gpfs_aclType_t type) } SMB_ACL_T gpfsacl_sys_acl_get_file(vfs_handle_struct *handle, - const char *path_p, SMB_ACL_TYPE_T type) { @@ -557,7 +611,7 @@ static struct gpfs_acl *smb2gpfs_acl(const SMB_ACL_T pacl, for (i=0; i<pacl->count; i++) { const struct smb_acl_entry *ace = &pacl->acl[i]; struct gpfs_ace_v1 *g_ace = &result->ace_v1[i]; - + DEBUG(10, ("Converting type %d perm %x\n", (int)ace->a_type, (int)ace->a_perm)); @@ -612,7 +666,6 @@ static struct gpfs_acl *smb2gpfs_acl(const SMB_ACL_T pacl, } int gpfsacl_sys_acl_set_file(vfs_handle_struct *handle, - const char *name, SMB_ACL_TYPE_T type, SMB_ACL_T theacl) @@ -639,7 +692,6 @@ int gpfsacl_sys_acl_set_fd(vfs_handle_struct *handle, } int gpfsacl_sys_acl_delete_def_file(vfs_handle_struct *handle, - const char *path) { errno = ENOTSUP; @@ -661,11 +713,11 @@ static uint32 gpfsacl_mask_filter(uint32 aceType, uint32 aceMask, uint32 rwx) uint32_t posix_mask = 0x01; uint32_t posix_bit; uint32_t nfs4_bits; - + for(i=0; i<3; i++) { nfs4_bits = posix_nfs4map[i]; posix_bit = rwx & posix_mask; - + if (aceType==SMB_ACE4_ACCESS_ALLOWED_ACE_TYPE) { if (posix_bit) aceMask |= nfs4_bits; @@ -678,10 +730,10 @@ static uint32 gpfsacl_mask_filter(uint32 aceType, uint32 aceMask, uint32 rwx) else aceMask &= ~nfs4_bits; } /* other ace types are unexpected */ - + posix_mask <<= 1; } - + return aceMask; } @@ -693,30 +745,30 @@ static int gpfsacl_emu_chmod(const char *path, mode_t mode) int i; files_struct fake_fsp; /* TODO: rationalize parametrization */ SMB4ACE_T *smbace; - + DEBUG(10, ("gpfsacl_emu_chmod invoked for %s mode %o\n", path, mode)); - + result = gpfs_get_nfs4_acl(path, &pacl); if (result) return result; - + if (mode & ~(S_IRWXU | S_IRWXG | S_IRWXO)) { DEBUG(2, ("WARNING: cutting extra mode bits %o on %s\n", mode, path)); } - + for (smbace=smb_first_ace4(pacl); smbace!=NULL; smbace = smb_next_ace4(smbace)) { SMB_ACE4PROP_T *ace = smb_get_ace4(smbace); uint32_t specid = ace->who.special_id; - + if (ace->flags&SMB_ACE4_ID_SPECIAL && ace->aceType<=SMB_ACE4_ACCESS_DENIED_ACE_TYPE && specid <= SMB_ACE4_WHO_EVERYONE) { - + uint32_t newMask; - + if (ace->aceType==SMB_ACE4_ACCESS_ALLOWED_ACE_TYPE) haveAllowEntry[specid] = True; - + /* mode >> 6 for @owner, mode >> 3 for @group, * mode >> 0 for @everyone */ newMask = gpfsacl_mask_filter(ace->aceType, ace->aceMask, @@ -735,35 +787,35 @@ static int gpfsacl_emu_chmod(const char *path, mode_t mode) */ for(i = SMB_ACE4_WHO_OWNER; i<=SMB_ACE4_WHO_EVERYONE; i++) { SMB_ACE4PROP_T ace; - + if (haveAllowEntry[i]==True) continue; - + ZERO_STRUCT(ace); ace.aceType = SMB_ACE4_ACCESS_ALLOWED_ACE_TYPE; ace.flags |= SMB_ACE4_ID_SPECIAL; ace.who.special_id = i; - + if (i==SMB_ACE4_WHO_GROUP) /* not sure it's necessary... */ ace.aceFlags |= SMB_ACE4_IDENTIFIER_GROUP; - + ace.aceMask = gpfsacl_mask_filter(ace.aceType, ace.aceMask, mode >> ((SMB_ACE4_WHO_EVERYONE - i) * 3)); - + /* don't add unnecessary aces */ if (!ace.aceMask) continue; - + /* we add it to the END - as windows expects allow aces */ smb_add_ace4(pacl, &ace); DEBUG(10, ("Added ALLOW ace for %s, mode=%o, id=%d, aceMask=%x\n", path, mode, i, ace.aceMask)); } - + /* don't add complementary DENY ACEs here */ ZERO_STRUCT(fake_fsp); fake_fsp.fsp_name = (char *)path; /* no file_new is needed here */ - + /* put the acl */ if (gpfsacl_process_smbacl(&fake_fsp, pacl) == False) return -1; @@ -774,11 +826,11 @@ static int vfs_gpfs_chmod(vfs_handle_struct *handle, const char *path, mode_t mo { SMB_STRUCT_STAT st; int rc; - + if (SMB_VFS_NEXT_STAT(handle, path, &st) != 0) { return -1; } - + /* avoid chmod() if possible, to preserve acls */ if ((st.st_mode & ~S_IFMT) == mode) { return 0; @@ -794,7 +846,7 @@ static int vfs_gpfs_fchmod(vfs_handle_struct *handle, files_struct *fsp, mode_t { SMB_STRUCT_STAT st; int rc; - + if (SMB_VFS_NEXT_FSTAT(handle, fsp, &st) != 0) { return -1; } @@ -813,51 +865,55 @@ static int vfs_gpfs_fchmod(vfs_handle_struct *handle, files_struct *fsp, mode_t /* VFS operations structure */ static vfs_op_tuple gpfs_op_tuples[] = { - + { SMB_VFS_OP(vfs_gpfs_kernel_flock), SMB_VFS_OP_KERNEL_FLOCK, SMB_VFS_LAYER_OPAQUE }, - + { SMB_VFS_OP(vfs_gpfs_setlease), SMB_VFS_OP_LINUX_SETLEASE, SMB_VFS_LAYER_OPAQUE }, - + + { SMB_VFS_OP(vfs_gpfs_get_real_filename), + SMB_VFS_OP_GET_REAL_FILENAME, + SMB_VFS_LAYER_OPAQUE }, + { SMB_VFS_OP(gpfsacl_fget_nt_acl), SMB_VFS_OP_FGET_NT_ACL, SMB_VFS_LAYER_TRANSPARENT }, - + { SMB_VFS_OP(gpfsacl_get_nt_acl), SMB_VFS_OP_GET_NT_ACL, SMB_VFS_LAYER_TRANSPARENT }, - + { SMB_VFS_OP(gpfsacl_fset_nt_acl), SMB_VFS_OP_FSET_NT_ACL, SMB_VFS_LAYER_TRANSPARENT }, - + { SMB_VFS_OP(gpfsacl_sys_acl_get_file), SMB_VFS_OP_SYS_ACL_GET_FILE, SMB_VFS_LAYER_TRANSPARENT }, - + { SMB_VFS_OP(gpfsacl_sys_acl_get_fd), SMB_VFS_OP_SYS_ACL_GET_FD, SMB_VFS_LAYER_TRANSPARENT }, - + { SMB_VFS_OP(gpfsacl_sys_acl_set_file), SMB_VFS_OP_SYS_ACL_SET_FILE, SMB_VFS_LAYER_TRANSPARENT }, - + { SMB_VFS_OP(gpfsacl_sys_acl_set_fd), SMB_VFS_OP_SYS_ACL_SET_FD, SMB_VFS_LAYER_TRANSPARENT }, - + { SMB_VFS_OP(gpfsacl_sys_acl_delete_def_file), SMB_VFS_OP_SYS_ACL_DELETE_DEF_FILE, SMB_VFS_LAYER_TRANSPARENT }, - + { SMB_VFS_OP(vfs_gpfs_chmod), SMB_VFS_OP_CHMOD, SMB_VFS_LAYER_TRANSPARENT }, - + { SMB_VFS_OP(vfs_gpfs_fchmod), SMB_VFS_OP_FCHMOD, SMB_VFS_LAYER_TRANSPARENT }, @@ -871,7 +927,7 @@ NTSTATUS vfs_gpfs_init(void); NTSTATUS vfs_gpfs_init(void) { init_gpfs(); - + return smb_register_vfs(SMB_VFS_INTERFACE_VERSION, "gpfs", gpfs_op_tuples); } |