Man page: Move the description of --info=progress2 to a better place.

[rsync/rsync.git] / chmod.c

diff --git a/chmod.c b/chmod.c
index 8a6adfd..74e3ad7 100644 (file)
--- a/chmod.c
+++ b/chmod.c
@@ -1,6 +1,27 @@
+/*
+ * Implement the core of the --chmod option.
+ *
+ * Copyright (C) 2002 Scott Howard
+ * Copyright (C) 2005-2009 Wayne Davison
+ *
+ * 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, visit the http://fsf.org website.
+ */
+
 #include "rsync.h"
+#include "itypes.h"
 
-extern int orig_umask;
+extern mode_t orig_umask;
 
 #define FLAG_X_KEEP (1<<0)
 #define FLAG_DIRS_ONLY (1<<1)
@@ -15,15 +36,18 @@ struct chmod_mode_struct {
 #define CHMOD_ADD 1
 #define CHMOD_SUB 2
 #define CHMOD_EQ  3
+#define CHMOD_SET 4
 
 #define STATE_ERROR 0
 #define STATE_1ST_HALF 1
 #define STATE_2ND_HALF 2
+#define STATE_OCTAL_NUM 3
 
 /* Parse a chmod-style argument, and break it down into one or more AND/OR
- * pairs in a linked list.  We use a state machine to walk through the
- * options. */
-int parse_chmod(const char *modestr, struct chmod_mode_struct **root_mode_ptr)
+ * pairs in a linked list.  We return a pointer to new items on succcess
+ * (appending the items to the specified list), or NULL on error. */
+struct chmod_mode_struct *parse_chmod(const char *modestr,
+                                     struct chmod_mode_struct **root_mode_ptr)
 {
        int state = STATE_1ST_HALF;
        int where = 0, what = 0, op = 0, topbits = 0, topoct = 0, flags = 0;
@@ -55,17 +79,21 @@ int parse_chmod(const char *modestr, struct chmod_mode_struct **root_mode_ptr)
 
                        switch (op) {
                        case CHMOD_ADD:
-                               curr_mode->ModeAND = 07777;
+                               curr_mode->ModeAND = CHMOD_BITS;
                                curr_mode->ModeOR  = bits + topoct;
                                break;
                        case CHMOD_SUB:
-                               curr_mode->ModeAND = 07777 - bits - topoct;
+                               curr_mode->ModeAND = CHMOD_BITS - bits - topoct;
                                curr_mode->ModeOR  = 0;
                                break;
                        case CHMOD_EQ:
-                               curr_mode->ModeAND = 07777 - (where * 7) - (topoct ? topbits : 0);
+                               curr_mode->ModeAND = CHMOD_BITS - (where * 7) - (topoct ? topbits : 0);
                                curr_mode->ModeOR  = bits + topoct;
                                break;
+                       case CHMOD_SET:
+                               curr_mode->ModeAND = 0;
+                               curr_mode->ModeOR  = bits;
+                               break;
                        }
 
                        curr_mode->flags = flags;
@@ -78,17 +106,18 @@ int parse_chmod(const char *modestr, struct chmod_mode_struct **root_mode_ptr)
                        where = what = op = topoct = topbits = flags = 0;
                }
 
-               if (state != STATE_2ND_HALF) {
+               switch (state) {
+               case STATE_1ST_HALF:
                        switch (*modestr) {
                        case 'D':
                                if (flags & FLAG_FILES_ONLY)
                                        state = STATE_ERROR;
-                               flags |= FLAG_DIRS_ONLY;
+                               flags |= FLAG_DIRS_ONLY;
                                break;
                        case 'F':
                                if (flags & FLAG_DIRS_ONLY)
                                        state = STATE_ERROR;
-                               flags |= FLAG_FILES_ONLY;
+                               flags |= FLAG_FILES_ONLY;
                                break;
                        case 'u':
                                where |= 0100;
@@ -117,10 +146,17 @@ int parse_chmod(const char *modestr, struct chmod_mode_struct **root_mode_ptr)
                                state = STATE_2ND_HALF;
                                break;
                        default:
-                               state = STATE_ERROR;
+                               if (isDigit(modestr) && *modestr < '8' && !where) {
+                                       op = CHMOD_SET;
+                                       state =  STATE_OCTAL_NUM;
+                                       where = 1;
+                                       what = *modestr - '0';
+                               } else
+                                       state = STATE_ERROR;
                                break;
                        }
-               } else {
+                       break;
+               case STATE_2ND_HALF:
                        switch (*modestr) {
                        case 'r':
                                what |= 4;
@@ -129,7 +165,7 @@ int parse_chmod(const char *modestr, struct chmod_mode_struct **root_mode_ptr)
                                what |= 2;
                                break;
                        case 'X':
-                               flags |= FLAG_X_KEEP;
+                               flags |= FLAG_X_KEEP;
                                /* FALL THROUGH */
                        case 'x':
                                what |= 1;
@@ -147,13 +183,22 @@ int parse_chmod(const char *modestr, struct chmod_mode_struct **root_mode_ptr)
                                state = STATE_ERROR;
                                break;
                        }
+                       break;
+               case STATE_OCTAL_NUM:
+                       if (isDigit(modestr) && *modestr < '8') {
+                               what = what*8 + *modestr - '0';
+                               if (what > CHMOD_BITS)
+                                       state = STATE_ERROR;
+                       } else
+                               state = STATE_ERROR;
+                       break;
                }
                modestr++;
        }
 
        if (state == STATE_ERROR) {
                free_chmod_mode(first_mode);
-               return 0;
+               return NULL;
        }
 
        if (!(curr_mode = *root_mode_ptr))
@@ -164,7 +209,7 @@ int parse_chmod(const char *modestr, struct chmod_mode_struct **root_mode_ptr)
                curr_mode->next = first_mode;
        }
 
-       return 1;
+       return first_mode;
 }
 
 
@@ -173,7 +218,7 @@ int parse_chmod(const char *modestr, struct chmod_mode_struct **root_mode_ptr)
 int tweak_mode(int mode, struct chmod_mode_struct *chmod_modes)
 {
        int IsX = mode & 0111;
-       int NonPerm = mode & ~07777;
+       int NonPerm = mode & ~CHMOD_BITS;
 
        for ( ; chmod_modes; chmod_modes = chmod_modes->next) {
                if ((chmod_modes->flags & FLAG_DIRS_ONLY) && !S_ISDIR(NonPerm))