/* DO NOT EDIT! GENERATED AUTOMATICALLY! */
/* modechange.c -- file mode manipulation
- Copyright (C) 1989-1990, 1997-1999, 2001, 2003-2006, 2009-2011 Free Software
+ Copyright (C) 1989-1990, 1997-1999, 2001, 2003-2006, 2009-2013 Free Software
Foundation, Inc.
This program is free software: you can redistribute it and/or modify
/* Written by David MacKenzie <djm@ai.mit.edu> */
-/* The ASCII mode string is compiled into an array of `struct
+/* The ASCII mode string is compiled into an array of 'struct
modechange', which can then be applied to each file to be changed.
We do this instead of re-parsing the ASCII string for each file
because the compiled form requires less computation to use; when
/* Instead of the typical case, copy some existing permissions for
u, g, or o onto the other two. Which of u, g, or o is copied
- is determined by which bits are set in the `value' field. */
+ is determined by which bits are set in the 'value' field. */
MODE_COPY_EXISTING
};
mode_t mentioned; /* Bits explicitly mentioned. */
};
-/* Return a mode_change array with the specified `=ddd'-style
- mode change operation, where NEW_MODE is `ddd' and MENTIONED
+/* Return a mode_change array with the specified "=ddd"-style
+ mode change operation, where NEW_MODE is "ddd" and MENTIONED
contains the bits explicitly mentioned in the mode are MENTIONED. */
static struct mode_change *
the form:
[ugoa...][[+-=][rwxXstugo...]...][,...]
- Return NULL if `mode_string' does not contain a valid
+ Return NULL if 'mode_string' does not contain a valid
representation of file mode change operations. */
struct mode_change *
/* The array of mode-change directives to be returned. */
struct mode_change *mc;
size_t used = 0;
+ char const *p;
if ('0' <= *mode_string && *mode_string < '8')
{
mode_t mode;
mode_t mentioned;
+ p = mode_string;
do
{
- octal_mode = 8 * octal_mode + *mode_string++ - '0';
+ octal_mode = 8 * octal_mode + *p++ - '0';
if (ALLM < octal_mode)
return NULL;
}
- while ('0' <= *mode_string && *mode_string < '8');
+ while ('0' <= *p && *p < '8');
- if (*mode_string)
+ if (*p)
return NULL;
mode = octal_to_mode (octal_mode);
- mentioned = (mode & (S_ISUID | S_ISGID)) | S_ISVTX | S_IRWXUGO;
+ mentioned = (p - mode_string < 5
+ ? (mode & (S_ISUID | S_ISGID)) | S_ISVTX | S_IRWXUGO
+ : CHMOD_MODE_BITS);
return make_node_op_equals (mode, mentioned);
}
/* Allocate enough space to hold the result. */
{
size_t needed = 1;
- char const *p;
for (p = mode_string; *p; p++)
needed += (*p == '=' || *p == '+' || *p == '-');
mc = xnmalloc (needed, sizeof *mc);
}
- /* One loop iteration for each `[ugoa]*([-+=]([rwxXst]*|[ugo]))+'. */
- for (;; mode_string++)
+ /* One loop iteration for each
+ '[ugoa]*([-+=]([rwxXst]*|[ugo]))+|[-+=][0-7]+'. */
+ for (p = mode_string; ; p++)
{
/* Which bits in the mode are operated on. */
mode_t affected = 0;
- /* Turn on all the bits in `affected' for each group given. */
- for (;; mode_string++)
- switch (*mode_string)
+ /* Turn on all the bits in 'affected' for each group given. */
+ for (;; p++)
+ switch (*p)
{
default:
goto invalid;
do
{
- char op = *mode_string++;
+ char op = *p++;
mode_t value;
+ mode_t mentioned = 0;
char flag = MODE_COPY_EXISTING;
struct mode_change *change;
- switch (*mode_string++)
+ switch (*p)
{
+ case '0': case '1': case '2': case '3':
+ case '4': case '5': case '6': case '7':
+ {
+ unsigned int octal_mode = 0;
+
+ do
+ {
+ octal_mode = 8 * octal_mode + *p++ - '0';
+ if (ALLM < octal_mode)
+ return NULL;
+ }
+ while ('0' <= *p && *p < '8');
+
+ if (affected || (*p && *p != ','))
+ return NULL;
+ affected = mentioned = CHMOD_MODE_BITS;
+ value = octal_to_mode (octal_mode);
+ flag = MODE_ORDINARY_CHANGE;
+ break;
+ }
+
case 'u':
- /* Set the affected bits to the value of the `u' bits
+ /* Set the affected bits to the value of the "u" bits
on the same file. */
value = S_IRWXU;
+ p++;
break;
case 'g':
- /* Set the affected bits to the value of the `g' bits
+ /* Set the affected bits to the value of the "g" bits
on the same file. */
value = S_IRWXG;
+ p++;
break;
case 'o':
- /* Set the affected bits to the value of the `o' bits
+ /* Set the affected bits to the value of the "o" bits
on the same file. */
value = S_IRWXO;
+ p++;
break;
default:
value = 0;
flag = MODE_ORDINARY_CHANGE;
- for (mode_string--;; mode_string++)
- switch (*mode_string)
+ for (;; p++)
+ switch (*p)
{
case 'r':
value |= S_IRUSR | S_IRGRP | S_IROTH;
flag = MODE_X_IF_ANY_X;
break;
case 's':
- /* Set the setuid/gid bits if `u' or `g' is selected. */
+ /* Set the setuid/gid bits if 'u' or 'g' is selected. */
value |= S_ISUID | S_ISGID;
break;
case 't':
- /* Set the "save text image" bit if `o' is selected. */
+ /* Set the "save text image" bit if 'o' is selected. */
value |= S_ISVTX;
break;
default:
change->flag = flag;
change->affected = affected;
change->value = value;
- change->mentioned = (affected ? affected & value : value);
+ change->mentioned =
+ (mentioned ? mentioned : affected ? affected & value : value);
}
- while (*mode_string == '=' || *mode_string == '+'
- || *mode_string == '-');
+ while (*p == '=' || *p == '+' || *p == '-');
- if (*mode_string != ',')
+ if (*p != ',')
break;
}
- if (*mode_string == 0)
+ if (*p == 0)
{
mc[used].flag = MODE_DONE;
return mc;
break;
case MODE_COPY_EXISTING:
- /* Isolate in `value' the bits in `newmode' to copy. */
+ /* Isolate in 'value' the bits in 'newmode' to copy. */
value &= newmode;
/* Copy the isolated bits to the other two parts. */
projects / debian / tar / blobdiff