Unix SMB/CIFS implementation.
dos mode handling functions
Copyright (C) Andrew Tridgell 1992-1998
+ Copyright (C) James Peach 2006
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 2 of the License, or
+ 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,
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, write to the Free Software
- Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
+ along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
#include "includes.h"
+static int set_sparse_flag(const SMB_STRUCT_STAT * const sbuf)
+{
+#if defined (HAVE_STAT_ST_BLOCKS) && defined(STAT_ST_BLOCKSIZE)
+ if (sbuf->st_size > sbuf->st_blocks * (SMB_OFF_T)STAT_ST_BLOCKSIZE) {
+ return FILE_ATTRIBUTE_SPARSE;
+ }
+#endif
+ return 0;
+}
+
/****************************************************************************
- change a dos mode to a unix mode
- base permission for files:
- if inheriting
+ Change a dos mode to a unix mode.
+ Base permission for files:
+ if creating file and inheriting (i.e. parent_dir != NULL)
apply read/write bits from parent directory.
else
everybody gets read bit set
Then apply create mask,
then add force bits.
}
- base permission for directories:
+ Base permission for directories:
dos directory is represented in unix by unix's dir bit and the exec bit
if !inheriting {
Then apply create mask,
then add force bits.
}
****************************************************************************/
-mode_t unix_mode(connection_struct *conn,int dosmode,const char *fname)
+
+mode_t unix_mode(connection_struct *conn, int dosmode, const char *fname,
+ const char *inherit_from_dir)
{
- mode_t result = (S_IRUSR | S_IRGRP | S_IROTH);
- mode_t dir_mode = 0; /* Mode of the parent directory if inheriting. */
-
- if ( !IS_DOS_READONLY(dosmode) )
- result |= (S_IWUSR | S_IWGRP | S_IWOTH);
-
- if (fname && lp_inherit_perms(SNUM(conn))) {
- char *dname;
- SMB_STRUCT_STAT sbuf;
-
- dname = parent_dirname(fname);
- DEBUG(2,("unix_mode(%s) inheriting from %s\n",fname,dname));
- if (SMB_VFS_STAT(conn,dname,&sbuf) != 0) {
- DEBUG(4,("unix_mode(%s) failed, [dir %s]: %s\n",fname,dname,strerror(errno)));
- return(0); /* *** shouldn't happen! *** */
- }
-
- /* Save for later - but explicitly remove setuid bit for safety. */
- dir_mode = sbuf.st_mode & ~S_ISUID;
- DEBUG(2,("unix_mode(%s) inherit mode %o\n",fname,(int)dir_mode));
- /* Clear "result" */
- result = 0;
- }
-
- if (IS_DOS_DIR(dosmode)) {
- /* We never make directories read only for the owner as under DOS a user
- can always create a file in a read-only directory. */
- result |= (S_IFDIR | S_IWUSR);
-
- if (dir_mode) {
- /* Inherit mode of parent directory. */
- result |= dir_mode;
- } else {
- /* Provisionally add all 'x' bits */
- result |= (S_IXUSR | S_IXGRP | S_IXOTH);
-
- /* Apply directory mask */
- result &= lp_dir_mask(SNUM(conn));
- /* Add in force bits */
- result |= lp_force_dir_mode(SNUM(conn));
- }
- } else {
- if (lp_map_archive(SNUM(conn)) && IS_DOS_ARCHIVE(dosmode))
- result |= S_IXUSR;
-
- if (lp_map_system(SNUM(conn)) && IS_DOS_SYSTEM(dosmode))
- result |= S_IXGRP;
+ mode_t result = (S_IRUSR | S_IRGRP | S_IROTH | S_IWUSR | S_IWGRP | S_IWOTH);
+ mode_t dir_mode = 0; /* Mode of the inherit_from directory if
+ * inheriting. */
+
+ if (!lp_store_dos_attributes(SNUM(conn)) && IS_DOS_READONLY(dosmode)) {
+ result &= ~(S_IWUSR | S_IWGRP | S_IWOTH);
+ }
+
+ if (fname && (inherit_from_dir != NULL)
+ && lp_inherit_perms(SNUM(conn))) {
+ SMB_STRUCT_STAT sbuf;
+
+ DEBUG(2, ("unix_mode(%s) inheriting from %s\n", fname,
+ inherit_from_dir));
+ if (SMB_VFS_STAT(conn, inherit_from_dir, &sbuf) != 0) {
+ DEBUG(4,("unix_mode(%s) failed, [dir %s]: %s\n", fname,
+ inherit_from_dir, strerror(errno)));
+ return(0); /* *** shouldn't happen! *** */
+ }
+
+ /* Save for later - but explicitly remove setuid bit for safety. */
+ dir_mode = sbuf.st_mode & ~S_ISUID;
+ DEBUG(2,("unix_mode(%s) inherit mode %o\n",fname,(int)dir_mode));
+ /* Clear "result" */
+ result = 0;
+ }
+
+ if (IS_DOS_DIR(dosmode)) {
+ /* We never make directories read only for the owner as under DOS a user
+ can always create a file in a read-only directory. */
+ result |= (S_IFDIR | S_IWUSR);
+
+ if (dir_mode) {
+ /* Inherit mode of parent directory. */
+ result |= dir_mode;
+ } else {
+ /* Provisionally add all 'x' bits */
+ result |= (S_IXUSR | S_IXGRP | S_IXOTH);
+
+ /* Apply directory mask */
+ result &= lp_dir_mask(SNUM(conn));
+ /* Add in force bits */
+ result |= lp_force_dir_mode(SNUM(conn));
+ }
+ } else {
+ if (lp_map_archive(SNUM(conn)) && IS_DOS_ARCHIVE(dosmode))
+ result |= S_IXUSR;
+
+ if (lp_map_system(SNUM(conn)) && IS_DOS_SYSTEM(dosmode))
+ result |= S_IXGRP;
- if (lp_map_hidden(SNUM(conn)) && IS_DOS_HIDDEN(dosmode))
- result |= S_IXOTH;
-
- if (dir_mode) {
- /* Inherit 666 component of parent directory mode */
- result |= dir_mode
- & (S_IRUSR | S_IRGRP | S_IROTH | S_IWUSR | S_IWGRP | S_IWOTH);
- } else {
- /* Apply mode mask */
- result &= lp_create_mask(SNUM(conn));
- /* Add in force bits */
- result |= lp_force_create_mode(SNUM(conn));
- }
- }
-
- DEBUG(3,("unix_mode(%s) returning 0%o\n",fname,(int)result ));
- return(result);
-}
+ if (lp_map_hidden(SNUM(conn)) && IS_DOS_HIDDEN(dosmode))
+ result |= S_IXOTH;
+
+ if (dir_mode) {
+ /* Inherit 666 component of parent directory mode */
+ result |= dir_mode & (S_IRUSR | S_IRGRP | S_IROTH | S_IWUSR | S_IWGRP | S_IWOTH);
+ } else {
+ /* Apply mode mask */
+ result &= lp_create_mask(SNUM(conn));
+ /* Add in force bits */
+ result |= lp_force_create_mode(SNUM(conn));
+ }
+ }
+ DEBUG(3,("unix_mode(%s) returning 0%o\n",fname,(int)result ));
+ return(result);
+}
/****************************************************************************
- change a unix mode to a dos mode
+ Change a unix mode to a dos mode.
****************************************************************************/
-uint32 dos_mode(connection_struct *conn,char *path,SMB_STRUCT_STAT *sbuf)
+
+static uint32 dos_mode_from_sbuf(connection_struct *conn, const char *path, SMB_STRUCT_STAT *sbuf)
{
int result = 0;
+ enum mapreadonly_options ro_opts = (enum mapreadonly_options)lp_map_readonly(SNUM(conn));
+
+ if (ro_opts == MAP_READONLY_YES) {
+ /* Original Samba method - map inverse of user "w" bit. */
+ if ((sbuf->st_mode & S_IWUSR) == 0) {
+ result |= aRONLY;
+ }
+ } else if (ro_opts == MAP_READONLY_PERMISSIONS) {
+ /* Check actual permissions for read-only. */
+ if (!can_write_to_file(conn, path, sbuf)) {
+ result |= aRONLY;
+ }
+ } /* Else never set the readonly bit. */
- DEBUG(8,("dos_mode: %s\n", path));
-
- if ((sbuf->st_mode & S_IWUSR) == 0)
- result |= aRONLY;
-
if (MAP_ARCHIVE(conn) && ((sbuf->st_mode & S_IXUSR) != 0))
result |= aARCH;
if (S_ISDIR(sbuf->st_mode))
result = aDIR | (result & aRONLY);
-#if defined (HAVE_STAT_ST_BLOCKS) && defined (HAVE_STAT_ST_BLKSIZE)
- if (sbuf->st_size > sbuf->st_blocks * (SMB_OFF_T)sbuf->st_blksize) {
- result |= FILE_ATTRIBUTE_SPARSE;
- }
-#endif
+ result |= set_sparse_flag(sbuf);
#ifdef S_ISLNK
#if LINKS_READ_ONLY
#endif
#endif
+ DEBUG(8,("dos_mode_from_sbuf returning "));
+
+ if (result & aHIDDEN) DEBUG(8, ("h"));
+ if (result & aRONLY ) DEBUG(8, ("r"));
+ if (result & aSYSTEM) DEBUG(8, ("s"));
+ if (result & aDIR ) DEBUG(8, ("d"));
+ if (result & aARCH ) DEBUG(8, ("a"));
+
+ DEBUG(8,("\n"));
+ return result;
+}
+
+/****************************************************************************
+ Get DOS attributes from an EA.
+****************************************************************************/
+
+static bool get_ea_dos_attribute(connection_struct *conn, const char *path,SMB_STRUCT_STAT *sbuf, uint32 *pattr)
+{
+ ssize_t sizeret;
+ fstring attrstr;
+ unsigned int dosattr;
+
+ if (!lp_store_dos_attributes(SNUM(conn))) {
+ return False;
+ }
+
+ /* Don't reset pattr to zero as we may already have filename-based attributes we
+ need to preserve. */
+
+ sizeret = SMB_VFS_GETXATTR(conn, path, SAMBA_XATTR_DOS_ATTRIB, attrstr, sizeof(attrstr));
+ if (sizeret == -1) {
+#if defined(ENOTSUP) && defined(ENOATTR)
+ if ((errno != ENOTSUP) && (errno != ENOATTR) && (errno != EACCES) && (errno != EPERM)) {
+ DEBUG(1,("get_ea_dos_attributes: Cannot get attribute from EA on file %s: Error = %s\n",
+ path, strerror(errno) ));
+ set_store_dos_attributes(SNUM(conn), False);
+ }
+#endif
+ return False;
+ }
+ /* Null terminate string. */
+ attrstr[sizeret] = 0;
+ DEBUG(10,("get_ea_dos_attribute: %s attrstr = %s\n", path, attrstr));
+
+ if (sizeret < 2 || attrstr[0] != '0' || attrstr[1] != 'x' ||
+ sscanf(attrstr, "%x", &dosattr) != 1) {
+ DEBUG(1,("get_ea_dos_attributes: Badly formed DOSATTRIB on file %s - %s\n", path, attrstr));
+ return False;
+ }
+
+ if (S_ISDIR(sbuf->st_mode)) {
+ dosattr |= aDIR;
+ }
+ *pattr = (uint32)(dosattr & SAMBA_ATTRIBUTES_MASK);
+
+ DEBUG(8,("get_ea_dos_attribute returning (0x%x)", dosattr));
+
+ if (dosattr & aHIDDEN) DEBUG(8, ("h"));
+ if (dosattr & aRONLY ) DEBUG(8, ("r"));
+ if (dosattr & aSYSTEM) DEBUG(8, ("s"));
+ if (dosattr & aDIR ) DEBUG(8, ("d"));
+ if (dosattr & aARCH ) DEBUG(8, ("a"));
+
+ DEBUG(8,("\n"));
+
+ return True;
+}
+
+/****************************************************************************
+ Set DOS attributes in an EA.
+****************************************************************************/
+
+static bool set_ea_dos_attribute(connection_struct *conn, const char *path, SMB_STRUCT_STAT *sbuf, uint32 dosmode)
+{
+ fstring attrstr;
+ files_struct *fsp = NULL;
+ bool ret = False;
+
+ if (!lp_store_dos_attributes(SNUM(conn))) {
+ return False;
+ }
+
+ snprintf(attrstr, sizeof(attrstr)-1, "0x%x", dosmode & SAMBA_ATTRIBUTES_MASK);
+ if (SMB_VFS_SETXATTR(conn, path, SAMBA_XATTR_DOS_ATTRIB, attrstr, strlen(attrstr), 0) == -1) {
+ if((errno != EPERM) && (errno != EACCES)) {
+ if (errno == ENOSYS
+#if defined(ENOTSUP)
+ || errno == ENOTSUP) {
+#else
+ ) {
+#endif
+ set_store_dos_attributes(SNUM(conn), False);
+ }
+ return False;
+ }
+
+ /* We want DOS semantics, ie allow non owner with write permission to change the
+ bits on a file. Just like file_ntimes below.
+ */
+
+ /* Check if we have write access. */
+ if(!CAN_WRITE(conn) || !lp_dos_filemode(SNUM(conn)))
+ return False;
+
+ /*
+ * We need to open the file with write access whilst
+ * still in our current user context. This ensures we
+ * are not violating security in doing the setxattr.
+ */
+
+ if (!NT_STATUS_IS_OK(open_file_fchmod(conn,path,sbuf,&fsp)))
+ return ret;
+ become_root();
+ if (SMB_VFS_SETXATTR(conn, path, SAMBA_XATTR_DOS_ATTRIB, attrstr, strlen(attrstr), 0) == 0) {
+ ret = True;
+ }
+ unbecome_root();
+ close_file_fchmod(fsp);
+ return ret;
+ }
+ DEBUG(10,("set_ea_dos_attribute: set EA %s on file %s\n", attrstr, path));
+ return True;
+}
+
+/****************************************************************************
+ Change a unix mode to a dos mode for an ms dfs link.
+****************************************************************************/
+
+uint32 dos_mode_msdfs(connection_struct *conn, const char *path,SMB_STRUCT_STAT *sbuf)
+{
+ uint32 result = 0;
+
+ DEBUG(8,("dos_mode_msdfs: %s\n", path));
+
+ if (!VALID_STAT(*sbuf)) {
+ return 0;
+ }
+
+ /* First do any modifications that depend on the path name. */
/* hide files with a name starting with a . */
if (lp_hide_dot_files(SNUM(conn))) {
- char *p = strrchr_m(path,'/');
- if (p)
+ const char *p = strrchr_m(path,'/');
+ if (p) {
p++;
- else
+ } else {
p = path;
+ }
- if (p[0] == '.' && p[1] != '.' && p[1] != 0)
+ if (p[0] == '.' && p[1] != '.' && p[1] != 0) {
result |= aHIDDEN;
+ }
}
+ result |= dos_mode_from_sbuf(conn, path, sbuf);
+
+ /* Optimization : Only call is_hidden_path if it's not already
+ hidden. */
+ if (!(result & aHIDDEN) && IS_HIDDEN_PATH(conn,path)) {
+ result |= aHIDDEN;
+ }
+
+ DEBUG(8,("dos_mode_msdfs returning "));
+
+ if (result & aHIDDEN) DEBUG(8, ("h"));
+ if (result & aRONLY ) DEBUG(8, ("r"));
+ if (result & aSYSTEM) DEBUG(8, ("s"));
+ if (result & aDIR ) DEBUG(8, ("d"));
+ if (result & aARCH ) DEBUG(8, ("a"));
+ if (result & FILE_ATTRIBUTE_SPARSE ) DEBUG(8, ("[sparse]"));
+
+ DEBUG(8,("\n"));
+
+ return(result);
+}
+
+/****************************************************************************
+ Change a unix mode to a dos mode.
+****************************************************************************/
+
+uint32 dos_mode(connection_struct *conn, const char *path,SMB_STRUCT_STAT *sbuf)
+{
+ uint32 result = 0;
+ bool offline;
+
+ DEBUG(8,("dos_mode: %s\n", path));
+
+ if (!VALID_STAT(*sbuf)) {
+ return 0;
+ }
+
+ /* First do any modifications that depend on the path name. */
+ /* hide files with a name starting with a . */
+ if (lp_hide_dot_files(SNUM(conn))) {
+ const char *p = strrchr_m(path,'/');
+ if (p) {
+ p++;
+ } else {
+ p = path;
+ }
+
+ if (p[0] == '.' && p[1] != '.' && p[1] != 0) {
+ result |= aHIDDEN;
+ }
+ }
+
+ /* Get the DOS attributes from an EA by preference. */
+ if (get_ea_dos_attribute(conn, path, sbuf, &result)) {
+ result |= set_sparse_flag(sbuf);
+ } else {
+ result |= dos_mode_from_sbuf(conn, path, sbuf);
+ }
+
+
+ offline = SMB_VFS_IS_OFFLINE(conn, path, sbuf);
+ if (S_ISREG(sbuf->st_mode) && offline) {
+ result |= FILE_ATTRIBUTE_OFFLINE;
+ }
+
/* Optimization : Only call is_hidden_path if it's not already
hidden. */
if (!(result & aHIDDEN) && IS_HIDDEN_PATH(conn,path)) {
if (result & aSYSTEM) DEBUG(8, ("s"));
if (result & aDIR ) DEBUG(8, ("d"));
if (result & aARCH ) DEBUG(8, ("a"));
+ if (result & FILE_ATTRIBUTE_SPARSE ) DEBUG(8, ("[sparse]"));
DEBUG(8,("\n"));
}
/*******************************************************************
-chmod a file - but preserve some bits
+ chmod a file - but preserve some bits.
********************************************************************/
-int file_chmod(connection_struct *conn,char *fname, uint32 dosmode,SMB_STRUCT_STAT *st)
+int file_set_dosmode(connection_struct *conn, const char *fname,
+ uint32 dosmode, SMB_STRUCT_STAT *st,
+ const char *parent_dir,
+ bool newfile)
{
SMB_STRUCT_STAT st1;
int mask=0;
mode_t tmp;
mode_t unixmode;
- int ret = -1;
+ int ret = -1, lret = -1;
+ uint32_t old_mode;
+
+ /* We only allow READONLY|HIDDEN|SYSTEM|DIRECTORY|ARCHIVE here. */
+ dosmode &= (SAMBA_ATTRIBUTES_MASK | FILE_ATTRIBUTE_OFFLINE);
+
+ DEBUG(10,("file_set_dosmode: setting dos mode 0x%x on file %s\n", dosmode, fname));
- if (!st) {
+ if (st == NULL) {
+ SET_STAT_INVALID(st1);
st = &st1;
+ }
+
+ if (!VALID_STAT(*st)) {
if (SMB_VFS_STAT(conn,fname,st))
return(-1);
}
+ unixmode = st->st_mode;
+
get_acl_group_bits(conn, fname, &st->st_mode);
if (S_ISDIR(st->st_mode))
else
dosmode &= ~aDIR;
- if (dos_mode(conn,fname,st) == dosmode)
+ old_mode = dos_mode(conn,fname,st);
+
+ if (dosmode & FILE_ATTRIBUTE_OFFLINE) {
+ if (!(old_mode & FILE_ATTRIBUTE_OFFLINE)) {
+ lret = SMB_VFS_SET_OFFLINE(conn, fname);
+ if (lret == -1) {
+ DEBUG(0, ("set_dos_mode: client has asked to set "
+ "FILE_ATTRIBUTE_OFFLINE to %s/%s but there was "
+ "an error while setting it or it is not supported.\n",
+ parent_dir, fname));
+ }
+ }
+ }
+
+ dosmode &= ~FILE_ATTRIBUTE_OFFLINE;
+ old_mode &= ~FILE_ATTRIBUTE_OFFLINE;
+
+ if (old_mode == dosmode) {
+ st->st_mode = unixmode;
return(0);
+ }
- unixmode = unix_mode(conn,dosmode,fname);
+ /* Store the DOS attributes in an EA by preference. */
+ if (set_ea_dos_attribute(conn, fname, st, dosmode)) {
+ if (!newfile) {
+ notify_fname(conn, NOTIFY_ACTION_MODIFIED,
+ FILE_NOTIFY_CHANGE_ATTRIBUTES, fname);
+ }
+ st->st_mode = unixmode;
+ return 0;
+ }
+
+ unixmode = unix_mode(conn,dosmode,fname, parent_dir);
/* preserve the s bits */
mask |= (S_ISUID | S_ISGID);
unixmode |= (st->st_mode & (S_IWUSR|S_IWGRP|S_IWOTH));
}
- if ((ret = SMB_VFS_CHMOD(conn,fname,unixmode)) == 0)
+ ret = SMB_VFS_CHMOD(conn, fname, unixmode);
+ if (ret == 0) {
+ if(!newfile || (lret != -1)) {
+ notify_fname(conn, NOTIFY_ACTION_MODIFIED,
+ FILE_NOTIFY_CHANGE_ATTRIBUTES, fname);
+ }
+ st->st_mode = unixmode;
return 0;
+ }
if((errno != EPERM) && (errno != EACCES))
return -1;
return -1;
/* We want DOS semantics, ie allow non owner with write permission to change the
- bits on a file. Just like file_utime below.
+ bits on a file. Just like file_ntimes below.
*/
/* Check if we have write access. */
* holding. We need to review this.... may need to
* break batch oplocks open by others. JRA.
*/
- files_struct *fsp = open_file_fchmod(conn,fname,st);
- if (!fsp)
+ files_struct *fsp;
+ if (!NT_STATUS_IS_OK(open_file_fchmod(conn,fname,st,&fsp)))
return -1;
become_root();
- ret = SMB_VFS_FCHMOD(fsp, fsp->fd, unixmode);
+ ret = SMB_VFS_FCHMOD(fsp, unixmode);
unbecome_root();
close_file_fchmod(fsp);
+ if (!newfile) {
+ notify_fname(conn, NOTIFY_ACTION_MODIFIED,
+ FILE_NOTIFY_CHANGE_ATTRIBUTES, fname);
+ }
+ if (ret == 0) {
+ st->st_mode = unixmode;
+ }
}
return( ret );
}
-
/*******************************************************************
-Wrapper around dos_utime that possibly allows DOS semantics rather
-than POSIX.
+ Wrapper around the VFS ntimes that possibly allows DOS semantics rather
+ than POSIX.
*******************************************************************/
-int file_utime(connection_struct *conn, char *fname, struct utimbuf *times)
+
+int file_ntimes(connection_struct *conn, const char *fname, const struct timespec ts[2])
{
- extern struct current_user current_user;
- SMB_STRUCT_STAT sb;
- int ret = -1;
-
- errno = 0;
-
- if(SMB_VFS_UTIME(conn,fname, times) == 0)
- return 0;
-
- if((errno != EPERM) && (errno != EACCES))
- return -1;
-
- if(!lp_dos_filetimes(SNUM(conn)))
- return -1;
-
- /* We have permission (given by the Samba admin) to
- break POSIX semantics and allow a user to change
- the time on a file they don't own but can write to
- (as DOS does).
- */
-
- if(SMB_VFS_STAT(conn,fname,&sb) != 0)
- return -1;
-
- /* Check if we have write access. */
- if (CAN_WRITE(conn)) {
- if (((sb.st_mode & S_IWOTH) ||
- conn->admin_user ||
- ((sb.st_mode & S_IWUSR) && current_user.uid==sb.st_uid) ||
- ((sb.st_mode & S_IWGRP) &&
- in_group(sb.st_gid,current_user.gid,
- current_user.ngroups,current_user.groups)))) {
- /* We are allowed to become root and change the filetime. */
- become_root();
- ret = SMB_VFS_UTIME(conn,fname, times);
- unbecome_root();
- }
- }
-
- return ret;
+ SMB_STRUCT_STAT sbuf;
+ int ret = -1;
+
+ errno = 0;
+ ZERO_STRUCT(sbuf);
+
+ DEBUG(6, ("file_ntime: actime: %s",
+ time_to_asc(convert_timespec_to_time_t(ts[0]))));
+ DEBUG(6, ("file_ntime: modtime: %s",
+ time_to_asc(convert_timespec_to_time_t(ts[1]))));
+
+ /* Don't update the time on read-only shares */
+ /* We need this as set_filetime (which can be called on
+ close and other paths) can end up calling this function
+ without the NEED_WRITE protection. Found by :
+ Leo Weppelman <leo@wau.mis.ah.nl>
+ */
+
+ if (!CAN_WRITE(conn)) {
+ return 0;
+ }
+
+ if(SMB_VFS_NTIMES(conn, fname, ts) == 0) {
+ return 0;
+ }
+
+ if((errno != EPERM) && (errno != EACCES)) {
+ return -1;
+ }
+
+ if(!lp_dos_filetimes(SNUM(conn))) {
+ return -1;
+ }
+
+ /* We have permission (given by the Samba admin) to
+ break POSIX semantics and allow a user to change
+ the time on a file they don't own but can write to
+ (as DOS does).
+ */
+
+ /* Check if we have write access. */
+ if (can_write_to_file(conn, fname, &sbuf)) {
+ /* We are allowed to become root and change the filetime. */
+ become_root();
+ ret = SMB_VFS_NTIMES(conn, fname, ts);
+ unbecome_root();
+ }
+
+ return ret;
}
-
-/*******************************************************************
-Change a filetime - possibly allowing DOS semantics.
-*******************************************************************/
-BOOL set_filetime(connection_struct *conn, char *fname, time_t mtime)
+
+/******************************************************************
+ Force a "sticky" write time on a pathname. This will always be
+ returned on all future write time queries and set on close.
+******************************************************************/
+
+bool set_sticky_write_time_path(connection_struct *conn, const char *fname,
+ struct file_id fileid, const struct timespec mtime)
{
- struct utimbuf times;
+ if (null_timespec(mtime)) {
+ return true;
+ }
- if (null_mtime(mtime)) return(True);
+ if (!set_sticky_write_time(fileid, mtime)) {
+ return false;
+ }
- times.modtime = times.actime = mtime;
+ return true;
+}
- if (file_utime(conn, fname, ×)) {
- DEBUG(4,("set_filetime(%s) failed: %s\n",fname,strerror(errno)));
- return False;
- }
-
- return(True);
-}
+/******************************************************************
+ Force a "sticky" write time on an fsp. This will always be
+ returned on all future write time queries and set on close.
+******************************************************************/
+
+bool set_sticky_write_time_fsp(struct files_struct *fsp, const struct timespec mtime)
+{
+ fsp->write_time_forced = true;
+ TALLOC_FREE(fsp->update_write_time_event);
+
+ return set_sticky_write_time_path(fsp->conn, fsp->fsp_name,
+ fsp->file_id, mtime);
+}
+
+/******************************************************************
+ Update a write time immediately, without the 2 second delay.
+******************************************************************/
+
+bool update_write_time(struct files_struct *fsp)
+{
+ if (!set_write_time(fsp->file_id, timespec_current())) {
+ return false;
+ }
+
+ notify_fname(fsp->conn, NOTIFY_ACTION_MODIFIED,
+ FILE_NOTIFY_CHANGE_LAST_WRITE, fsp->fsp_name);
+
+ return true;
+}
git.samba.org / tprouty / samba.git / blobdiff