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Diffstat (limited to 'source3/smbd/open.c')
-rw-r--r--source3/smbd/open.c190
1 files changed, 97 insertions, 93 deletions
diff --git a/source3/smbd/open.c b/source3/smbd/open.c
index a72469f2b2..e6289b1cdb 100644
--- a/source3/smbd/open.c
+++ b/source3/smbd/open.c
@@ -589,6 +589,102 @@ static void truncate_unless_locked(files_struct *fsp, connection_struct *conn, i
}
+enum {AFAIL,AREAD,AWRITE,AALL};
+
+/*******************************************************************
+reproduce the share mode access table
+********************************************************************/
+static int access_table(int new_deny,int old_deny,int old_mode,
+ int share_pid,char *fname)
+{
+ if (new_deny == DENY_ALL || old_deny == DENY_ALL) return(AFAIL);
+
+ if (new_deny == DENY_DOS || old_deny == DENY_DOS) {
+ int pid = getpid();
+ if (old_deny == new_deny && share_pid == pid)
+ return(AALL);
+
+ if (old_mode == 0) return(AREAD);
+
+ /* the new smbpub.zip spec says that if the file extension is
+ .com, .dll, .exe or .sym then allow the open. I will force
+ it to read-only as this seems sensible although the spec is
+ a little unclear on this. */
+ if ((fname = strrchr(fname,'.'))) {
+ if (strequal(fname,".com") ||
+ strequal(fname,".dll") ||
+ strequal(fname,".exe") ||
+ strequal(fname,".sym"))
+ return(AREAD);
+ }
+
+ return(AFAIL);
+ }
+
+ switch (new_deny)
+ {
+ case DENY_WRITE:
+ if (old_deny==DENY_WRITE && old_mode==0) return(AREAD);
+ if (old_deny==DENY_READ && old_mode==0) return(AWRITE);
+ if (old_deny==DENY_NONE && old_mode==0) return(AALL);
+ return(AFAIL);
+ case DENY_READ:
+ if (old_deny==DENY_WRITE && old_mode==1) return(AREAD);
+ if (old_deny==DENY_READ && old_mode==1) return(AWRITE);
+ if (old_deny==DENY_NONE && old_mode==1) return(AALL);
+ return(AFAIL);
+ case DENY_NONE:
+ if (old_deny==DENY_WRITE) return(AREAD);
+ if (old_deny==DENY_READ) return(AWRITE);
+ if (old_deny==DENY_NONE) return(AALL);
+ return(AFAIL);
+ }
+ return(AFAIL);
+}
+
+
+/****************************************************************************
+check if we can open a file with a share mode
+****************************************************************************/
+static int check_share_mode( share_mode_entry *share, int deny_mode,
+ char *fname,
+ BOOL fcbopen, int *flags)
+{
+ int old_open_mode = share->share_mode &0xF;
+ int old_deny_mode = (share->share_mode >>4)&7;
+
+ if (old_deny_mode > 4 || old_open_mode > 2)
+ {
+ DEBUG(0,("Invalid share mode found (%d,%d,%d) on file %s\n",
+ deny_mode,old_deny_mode,old_open_mode,fname));
+ return False;
+ }
+
+ {
+ int access_allowed = access_table(deny_mode,old_deny_mode,old_open_mode,
+ share->pid,fname);
+
+ if ((access_allowed == AFAIL) ||
+ (!fcbopen && (access_allowed == AREAD && *flags == O_RDWR)) ||
+ (access_allowed == AREAD && *flags == O_WRONLY) ||
+ (access_allowed == AWRITE && *flags == O_RDONLY))
+ {
+ DEBUG(2,("Share violation on file (%d,%d,%d,%d,%s,fcbopen = %d, flags = %d) = %d\n",
+ deny_mode,old_deny_mode,old_open_mode,
+ share->pid,fname, fcbopen, *flags, access_allowed));
+ return False;
+ }
+
+ if (access_allowed == AREAD)
+ *flags = O_RDONLY;
+
+ if (access_allowed == AWRITE)
+ *flags = O_WRONLY;
+
+ }
+ return True;
+}
+
/****************************************************************************
open a file with a share mode
@@ -852,7 +948,7 @@ dev = %x, inode = %lx\n", old_shares[i].op_type, fname, (unsigned int)dev, (unsi
dev = %x, inode = %.0f\n", oplock_request, fname, (unsigned int)dev, (double)inode));
#else /* LARGE_SMB_INO_T */
DEBUG(5,("open_file_shared: granted oplock (%x) on file %s, \
-dev = %x, inode = %lx\n", oplock_request, fname, (unsigned int)dev, (double)inode));
+dev = %x, inode = %lx\n", oplock_request, fname, (unsigned int)dev, (unsigned long)inode));
#endif /* LARGE_SMB_INO_T */
}
@@ -953,58 +1049,6 @@ int open_directory(files_struct *fsp,connection_struct *conn,
return 0;
}
-enum {AFAIL,AREAD,AWRITE,AALL};
-
-/*******************************************************************
-reproduce the share mode access table
-********************************************************************/
-static int access_table(int new_deny,int old_deny,int old_mode,
- int share_pid,char *fname)
-{
- if (new_deny == DENY_ALL || old_deny == DENY_ALL) return(AFAIL);
-
- if (new_deny == DENY_DOS || old_deny == DENY_DOS) {
- int pid = getpid();
- if (old_deny == new_deny && share_pid == pid)
- return(AALL);
-
- if (old_mode == 0) return(AREAD);
-
- /* the new smbpub.zip spec says that if the file extension is
- .com, .dll, .exe or .sym then allow the open. I will force
- it to read-only as this seems sensible although the spec is
- a little unclear on this. */
- if ((fname = strrchr(fname,'.'))) {
- if (strequal(fname,".com") ||
- strequal(fname,".dll") ||
- strequal(fname,".exe") ||
- strequal(fname,".sym"))
- return(AREAD);
- }
-
- return(AFAIL);
- }
-
- switch (new_deny)
- {
- case DENY_WRITE:
- if (old_deny==DENY_WRITE && old_mode==0) return(AREAD);
- if (old_deny==DENY_READ && old_mode==0) return(AWRITE);
- if (old_deny==DENY_NONE && old_mode==0) return(AALL);
- return(AFAIL);
- case DENY_READ:
- if (old_deny==DENY_WRITE && old_mode==1) return(AREAD);
- if (old_deny==DENY_READ && old_mode==1) return(AWRITE);
- if (old_deny==DENY_NONE && old_mode==1) return(AALL);
- return(AFAIL);
- case DENY_NONE:
- if (old_deny==DENY_WRITE) return(AREAD);
- if (old_deny==DENY_READ) return(AWRITE);
- if (old_deny==DENY_NONE) return(AALL);
- return(AFAIL);
- }
- return(AFAIL);
-}
/*******************************************************************
check if the share mode on a file allows it to be deleted or unlinked
@@ -1153,44 +1197,4 @@ free_and_exit:
return(ret);
}
-/****************************************************************************
-check if we can open a file with a share mode
-****************************************************************************/
-int check_share_mode( share_mode_entry *share, int deny_mode, char *fname,
- BOOL fcbopen, int *flags)
-{
- int old_open_mode = share->share_mode &0xF;
- int old_deny_mode = (share->share_mode >>4)&7;
-
- if (old_deny_mode > 4 || old_open_mode > 2)
- {
- DEBUG(0,("Invalid share mode found (%d,%d,%d) on file %s\n",
- deny_mode,old_deny_mode,old_open_mode,fname));
- return False;
- }
-
- {
- int access_allowed = access_table(deny_mode,old_deny_mode,old_open_mode,
- share->pid,fname);
-
- if ((access_allowed == AFAIL) ||
- (!fcbopen && (access_allowed == AREAD && *flags == O_RDWR)) ||
- (access_allowed == AREAD && *flags == O_WRONLY) ||
- (access_allowed == AWRITE && *flags == O_RDONLY))
- {
- DEBUG(2,("Share violation on file (%d,%d,%d,%d,%s,fcbopen = %d, flags = %d) = %d\n",
- deny_mode,old_deny_mode,old_open_mode,
- share->pid,fname, fcbopen, *flags, access_allowed));
- return False;
- }
-
- if (access_allowed == AREAD)
- *flags = O_RDONLY;
-
- if (access_allowed == AWRITE)
- *flags = O_WRONLY;
-
- }
- return True;
-}
generated by cgit (git 2.34.1) at 2024-10-31 16:57:38 +0000