+/*
+ * 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)
#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. */
+ * 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 *append_to)
+ 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;
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;
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;
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;
what |= 2;
break;
case 'X':
- flags |= FLAG_X_KEEP;
+ flags |= FLAG_X_KEEP;
/* FALL THROUGH */
case 'x':
what |= 1;
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++;
}
return NULL;
}
- if (append_to) {
- for (prev_mode = append_to; prev_mode->next; )
- prev_mode = prev_mode->next;
- prev_mode->next = first_mode;
- return append_to;
+ if (!(curr_mode = *root_mode_ptr))
+ *root_mode_ptr = first_mode;
+ else {
+ while (curr_mode->next)
+ curr_mode = curr_mode->next;
+ curr_mode->next = first_mode;
}
return first_mode;
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))
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