/* Help the compiler optimize the usual case where mode_t uses
the traditional octal representation. */
return ((S_ISUID == SUID && S_ISGID == SGID && S_ISVTX == SVTX
- && S_IRUSR == RUSR && S_IWUSR == WUSR && S_IXUSR == XUSR
- && S_IRGRP == RGRP && S_IWGRP == WGRP && S_IXGRP == XGRP
- && S_IROTH == ROTH && S_IWOTH == WOTH && S_IXOTH == XOTH)
- ? octal
- : (mode_t) ((octal & SUID ? S_ISUID : 0)
- | (octal & SGID ? S_ISGID : 0)
- | (octal & SVTX ? S_ISVTX : 0)
- | (octal & RUSR ? S_IRUSR : 0)
- | (octal & WUSR ? S_IWUSR : 0)
- | (octal & XUSR ? S_IXUSR : 0)
- | (octal & RGRP ? S_IRGRP : 0)
- | (octal & WGRP ? S_IWGRP : 0)
- | (octal & XGRP ? S_IXGRP : 0)
- | (octal & ROTH ? S_IROTH : 0)
- | (octal & WOTH ? S_IWOTH : 0)
- | (octal & XOTH ? S_IXOTH : 0)));
+ && S_IRUSR == RUSR && S_IWUSR == WUSR && S_IXUSR == XUSR
+ && S_IRGRP == RGRP && S_IWGRP == WGRP && S_IXGRP == XGRP
+ && S_IROTH == ROTH && S_IWOTH == WOTH && S_IXOTH == XOTH)
+ ? octal
+ : (mode_t) ((octal & SUID ? S_ISUID : 0)
+ | (octal & SGID ? S_ISGID : 0)
+ | (octal & SVTX ? S_ISVTX : 0)
+ | (octal & RUSR ? S_IRUSR : 0)
+ | (octal & WUSR ? S_IWUSR : 0)
+ | (octal & XUSR ? S_IXUSR : 0)
+ | (octal & RGRP ? S_IRGRP : 0)
+ | (octal & WGRP ? S_IWGRP : 0)
+ | (octal & XGRP ? S_IXGRP : 0)
+ | (octal & ROTH ? S_IROTH : 0)
+ | (octal & WOTH ? S_IWOTH : 0)
+ | (octal & XOTH ? S_IXOTH : 0)));
}
/* Special operations flags. */
/* Description of a mode change. */
struct mode_change
{
- char op; /* One of "=+-". */
- char flag; /* Special operations flag. */
- mode_t affected; /* Set for u, g, o, or a. */
- mode_t value; /* Bits to add/remove. */
- mode_t mentioned; /* Bits explicitly mentioned. */
+ char op; /* One of "=+-". */
+ char flag; /* Special operations flag. */
+ mode_t affected; /* Set for u, g, o, or a. */
+ mode_t value; /* Bits to add/remove. */
+ mode_t mentioned; /* Bits explicitly mentioned. */
};
/* Return a mode_change array with the specified `=ddd'-style
mode_t mentioned;
do
- {
- octal_mode = 8 * octal_mode + *mode_string++ - '0';
- if (ALLM < octal_mode)
- return NULL;
- }
+ {
+ octal_mode = 8 * octal_mode + *mode_string++ - '0';
+ if (ALLM < octal_mode)
+ return NULL;
+ }
while ('0' <= *mode_string && *mode_string < '8');
if (*mode_string)
- return NULL;
+ return NULL;
mode = octal_to_mode (octal_mode);
mentioned = (mode & (S_ISUID | S_ISGID)) | S_ISVTX | S_IRWXUGO;
/* Turn on all the bits in `affected' for each group given. */
for (;; mode_string++)
- switch (*mode_string)
- {
- default:
- goto invalid;
- case 'u':
- affected |= S_ISUID | S_IRWXU;
- break;
- case 'g':
- affected |= S_ISGID | S_IRWXG;
- break;
- case 'o':
- affected |= S_ISVTX | S_IRWXO;
- break;
- case 'a':
- affected |= CHMOD_MODE_BITS;
- break;
- case '=': case '+': case '-':
- goto no_more_affected;
- }
+ switch (*mode_string)
+ {
+ default:
+ goto invalid;
+ case 'u':
+ affected |= S_ISUID | S_IRWXU;
+ break;
+ case 'g':
+ affected |= S_ISGID | S_IRWXG;
+ break;
+ case 'o':
+ affected |= S_ISVTX | S_IRWXO;
+ break;
+ case 'a':
+ affected |= CHMOD_MODE_BITS;
+ break;
+ case '=': case '+': case '-':
+ goto no_more_affected;
+ }
no_more_affected:;
do
- {
- char op = *mode_string++;
- mode_t value;
- char flag = MODE_COPY_EXISTING;
- struct mode_change *change;
-
- switch (*mode_string++)
- {
- case 'u':
- /* Set the affected bits to the value of the `u' bits
- on the same file. */
- value = S_IRWXU;
- break;
- case 'g':
- /* Set the affected bits to the value of the `g' bits
- on the same file. */
- value = S_IRWXG;
- break;
- case 'o':
- /* Set the affected bits to the value of the `o' bits
- on the same file. */
- value = S_IRWXO;
- break;
-
- default:
- value = 0;
- flag = MODE_ORDINARY_CHANGE;
-
- for (mode_string--;; mode_string++)
- switch (*mode_string)
- {
- case 'r':
- value |= S_IRUSR | S_IRGRP | S_IROTH;
- break;
- case 'w':
- value |= S_IWUSR | S_IWGRP | S_IWOTH;
- break;
- case 'x':
- value |= S_IXUSR | S_IXGRP | S_IXOTH;
- break;
- case 'X':
- flag = MODE_X_IF_ANY_X;
- break;
- case 's':
- /* 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. */
- value |= S_ISVTX;
- break;
- default:
- goto no_more_values;
- }
- no_more_values:;
- }
-
- change = &mc[used++];
- change->op = op;
- change->flag = flag;
- change->affected = affected;
- change->value = value;
- change->mentioned = (affected ? affected & value : value);
- }
+ {
+ char op = *mode_string++;
+ mode_t value;
+ char flag = MODE_COPY_EXISTING;
+ struct mode_change *change;
+
+ switch (*mode_string++)
+ {
+ case 'u':
+ /* Set the affected bits to the value of the `u' bits
+ on the same file. */
+ value = S_IRWXU;
+ break;
+ case 'g':
+ /* Set the affected bits to the value of the `g' bits
+ on the same file. */
+ value = S_IRWXG;
+ break;
+ case 'o':
+ /* Set the affected bits to the value of the `o' bits
+ on the same file. */
+ value = S_IRWXO;
+ break;
+
+ default:
+ value = 0;
+ flag = MODE_ORDINARY_CHANGE;
+
+ for (mode_string--;; mode_string++)
+ switch (*mode_string)
+ {
+ case 'r':
+ value |= S_IRUSR | S_IRGRP | S_IROTH;
+ break;
+ case 'w':
+ value |= S_IWUSR | S_IWGRP | S_IWOTH;
+ break;
+ case 'x':
+ value |= S_IXUSR | S_IXGRP | S_IXOTH;
+ break;
+ case 'X':
+ flag = MODE_X_IF_ANY_X;
+ break;
+ case 's':
+ /* 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. */
+ value |= S_ISVTX;
+ break;
+ default:
+ goto no_more_values;
+ }
+ no_more_values:;
+ }
+
+ change = &mc[used++];
+ change->op = op;
+ change->flag = flag;
+ change->affected = affected;
+ change->value = value;
+ change->mentioned = (affected ? affected & value : value);
+ }
while (*mode_string == '=' || *mode_string == '+'
- || *mode_string == '-');
+ || *mode_string == '-');
if (*mode_string != ',')
- break;
+ break;
}
if (*mode_string == 0)
mode_t
mode_adjust (mode_t oldmode, bool dir, mode_t umask_value,
- struct mode_change const *changes, mode_t *pmode_bits)
+ struct mode_change const *changes, mode_t *pmode_bits)
{
/* The adjusted mode. */
mode_t newmode = oldmode & CHMOD_MODE_BITS;
{
mode_t affected = changes->affected;
mode_t omit_change =
- (dir ? S_ISUID | S_ISGID : 0) & ~ changes->mentioned;
+ (dir ? S_ISUID | S_ISGID : 0) & ~ changes->mentioned;
mode_t value = changes->value;
switch (changes->flag)
- {
- case MODE_ORDINARY_CHANGE:
- break;
-
- case MODE_COPY_EXISTING:
- /* Isolate in `value' the bits in `newmode' to copy. */
- value &= newmode;
-
- /* Copy the isolated bits to the other two parts. */
- value |= ((value & (S_IRUSR | S_IRGRP | S_IROTH)
- ? S_IRUSR | S_IRGRP | S_IROTH : 0)
- | (value & (S_IWUSR | S_IWGRP | S_IWOTH)
- ? S_IWUSR | S_IWGRP | S_IWOTH : 0)
- | (value & (S_IXUSR | S_IXGRP | S_IXOTH)
- ? S_IXUSR | S_IXGRP | S_IXOTH : 0));
- break;
-
- case MODE_X_IF_ANY_X:
- /* Affect the execute bits if execute bits are already set
- or if the file is a directory. */
- if ((newmode & (S_IXUSR | S_IXGRP | S_IXOTH)) | dir)
- value |= S_IXUSR | S_IXGRP | S_IXOTH;
- break;
- }
+ {
+ case MODE_ORDINARY_CHANGE:
+ break;
+
+ case MODE_COPY_EXISTING:
+ /* Isolate in `value' the bits in `newmode' to copy. */
+ value &= newmode;
+
+ /* Copy the isolated bits to the other two parts. */
+ value |= ((value & (S_IRUSR | S_IRGRP | S_IROTH)
+ ? S_IRUSR | S_IRGRP | S_IROTH : 0)
+ | (value & (S_IWUSR | S_IWGRP | S_IWOTH)
+ ? S_IWUSR | S_IWGRP | S_IWOTH : 0)
+ | (value & (S_IXUSR | S_IXGRP | S_IXOTH)
+ ? S_IXUSR | S_IXGRP | S_IXOTH : 0));
+ break;
+
+ case MODE_X_IF_ANY_X:
+ /* Affect the execute bits if execute bits are already set
+ or if the file is a directory. */
+ if ((newmode & (S_IXUSR | S_IXGRP | S_IXOTH)) | dir)
+ value |= S_IXUSR | S_IXGRP | S_IXOTH;
+ break;
+ }
/* If WHO was specified, limit the change to the affected bits.
- Otherwise, apply the umask. Either way, omit changes as
- requested. */
+ Otherwise, apply the umask. Either way, omit changes as
+ requested. */
value &= (affected ? affected : ~umask_value) & ~ omit_change;
switch (changes->op)
- {
- case '=':
- /* If WHO was specified, preserve the previous values of
- bits that are not affected by this change operation.
- Otherwise, clear all the bits. */
- {
- mode_t preserved = (affected ? ~affected : 0) | omit_change;
- mode_bits |= CHMOD_MODE_BITS & ~preserved;
- newmode = (newmode & preserved) | value;
- break;
- }
-
- case '+':
- mode_bits |= value;
- newmode |= value;
- break;
-
- case '-':
- mode_bits |= value;
- newmode &= ~value;
- break;
- }
+ {
+ case '=':
+ /* If WHO was specified, preserve the previous values of
+ bits that are not affected by this change operation.
+ Otherwise, clear all the bits. */
+ {
+ mode_t preserved = (affected ? ~affected : 0) | omit_change;
+ mode_bits |= CHMOD_MODE_BITS & ~preserved;
+ newmode = (newmode & preserved) | value;
+ break;
+ }
+
+ case '+':
+ mode_bits |= value;
+ newmode |= value;
+ break;
+
+ case '-':
+ mode_bits |= value;
+ newmode &= ~value;
+ break;
+ }
}
if (pmode_bits)
projects / gnulib.git / blobdiff