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-rw-r--r--source3/smbd/dosmode.c248
1 files changed, 125 insertions, 123 deletions
diff --git a/source3/smbd/dosmode.c b/source3/smbd/dosmode.c
index 8353baeb21..1369c46b2f 100644
--- a/source3/smbd/dosmode.c
+++ b/source3/smbd/dosmode.c
@@ -21,8 +21,8 @@
#include "includes.h"
/****************************************************************************
- change a dos mode to a unix mode
- base permission for files:
+ Change a dos mode to a unix mode.
+ Base permission for files:
if inheriting
apply read/write bits from parent directory.
else
@@ -35,84 +35,84 @@
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)
{
- 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);
+ 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;
- 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_from_sbuf(connection_struct *conn, SMB_STRUCT_STAT *sbuf)
@@ -160,8 +160,9 @@ uint32 dos_mode_from_sbuf(connection_struct *conn, SMB_STRUCT_STAT *sbuf)
}
/****************************************************************************
- 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)
{
int result = 0;
@@ -203,7 +204,7 @@ uint32 dos_mode(connection_struct *conn,char *path,SMB_STRUCT_STAT *sbuf)
}
/*******************************************************************
-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)
@@ -297,70 +298,71 @@ int file_chmod(connection_struct *conn,char *fname, uint32 dosmode,SMB_STRUCT_ST
return( ret );
}
-
/*******************************************************************
-Wrapper around dos_utime that possibly allows DOS semantics rather
-than POSIX.
+ Wrapper around dos_utime that possibly allows DOS semantics rather
+ than POSIX.
*******************************************************************/
+
int file_utime(connection_struct *conn, char *fname, struct utimbuf *times)
{
- 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;
+ 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;
}
/*******************************************************************
-Change a filetime - possibly allowing DOS semantics.
+ Change a filetime - possibly allowing DOS semantics.
*******************************************************************/
+
BOOL set_filetime(connection_struct *conn, char *fname, time_t mtime)
{
- struct utimbuf times;
+ struct utimbuf times;
- if (null_mtime(mtime)) return(True);
+ if (null_mtime(mtime))
+ return(True);
- times.modtime = times.actime = mtime;
+ times.modtime = times.actime = mtime;
- if (file_utime(conn, fname, &times)) {
- DEBUG(4,("set_filetime(%s) failed: %s\n",fname,strerror(errno)));
- return False;
- }
+ if (file_utime(conn, fname, &times)) {
+ DEBUG(4,("set_filetime(%s) failed: %s\n",fname,strerror(errno)));
+ return False;
+ }
- return(True);
+ return(True);
}