parsemode: rework
- for octal input: reset mode to 0. - take umask into account. - make '=rwx' etc work. - we wont support crazy but valid modes like "a+rw,g=x,o=g" - uudecode: use parsemode, mask is 0. Signed-off-by: Hiltjo Posthuma <hiltjo@codemadness.org>
This commit is contained in:
Hiltjo Posthuma
sin
parent
a1b62b2282
commit
bd99b92e91
22
chmod.c
22
chmod.c
|
|
@ -9,8 +9,8 @@
|
|||
static void chmodr(const char *);
|
||||
|
||||
static bool rflag = false;
|
||||
static int oper = '=';
|
||||
static mode_t mode = 0;
|
||||
static char *modestr = "";
|
||||
static mode_t mask = 0;
|
||||
|
||||
static void
|
||||
usage(void)
|
||||
|
|
@ -45,7 +45,8 @@ main(int argc, char *argv[])
|
|||
}
|
||||
|
||||
done:
|
||||
parsemode(argv[0], &mode, &oper);
|
||||
mask = getumask();
|
||||
modestr = argv[0];
|
||||
argv++;
|
||||
argc--;
|
||||
|
||||
|
|
@ -61,22 +62,13 @@ void
|
|||
chmodr(const char *path)
|
||||
{
|
||||
struct stat st;
|
||||
mode_t m;
|
||||
|
||||
if(stat(path, &st) == -1)
|
||||
eprintf("stat %s:", path);
|
||||
|
||||
switch(oper) {
|
||||
case '+':
|
||||
st.st_mode |= mode;
|
||||
break;
|
||||
case '-':
|
||||
st.st_mode &= ~mode;
|
||||
break;
|
||||
case '=':
|
||||
st.st_mode = mode;
|
||||
break;
|
||||
}
|
||||
if(chmod(path, st.st_mode) == -1)
|
||||
m = parsemode(modestr, st.st_mode, mask);
|
||||
if(chmod(path, m) == -1)
|
||||
weprintf("chmod %s:", path);
|
||||
if(rflag)
|
||||
recurse(path, chmodr);
|
||||
|
|
|
|||
3
util.h
3
util.h
|
|
@ -27,4 +27,5 @@ size_t strlcat(char *, const char *, size_t);
|
|||
size_t strlcpy(char *, const char *, size_t);
|
||||
void weprintf(const char *, ...);
|
||||
|
||||
void parsemode(const char *, mode_t *, int *);
|
||||
mode_t getumask(void);
|
||||
mode_t parsemode(const char *, mode_t, mode_t);
|
||||
|
|
|
|||
92
util/mode.c
92
util/mode.c
|
|
@ -4,74 +4,98 @@
|
|||
#include <sys/stat.h>
|
||||
#include "../util.h"
|
||||
|
||||
void
|
||||
parsemode(const char *str, mode_t *mode, int *oper)
|
||||
mode_t
|
||||
getumask(void)
|
||||
{
|
||||
mode_t mask = umask(0);
|
||||
umask(mask);
|
||||
return mask;
|
||||
}
|
||||
|
||||
mode_t
|
||||
parsemode(const char *str, mode_t mode, mode_t mask)
|
||||
{
|
||||
char *end;
|
||||
const char *p;
|
||||
int octal;
|
||||
mode_t mask = 0;
|
||||
int octal, op = '+';
|
||||
mode_t gmask = 0, m = 0;
|
||||
|
||||
octal = strtol(str, &end, 8);
|
||||
if(*end == '\0') {
|
||||
if(octal < 0 || octal > 07777)
|
||||
if(octal < 0 || octal > 07777) {
|
||||
eprintf("%s: invalid mode\n", str);
|
||||
if(octal & 04000) *mode |= S_ISUID;
|
||||
if(octal & 02000) *mode |= S_ISGID;
|
||||
if(octal & 01000) *mode |= S_ISVTX;
|
||||
if(octal & 00400) *mode |= S_IRUSR;
|
||||
if(octal & 00200) *mode |= S_IWUSR;
|
||||
if(octal & 00100) *mode |= S_IXUSR;
|
||||
if(octal & 00040) *mode |= S_IRGRP;
|
||||
if(octal & 00020) *mode |= S_IWGRP;
|
||||
if(octal & 00010) *mode |= S_IXGRP;
|
||||
if(octal & 00004) *mode |= S_IROTH;
|
||||
if(octal & 00002) *mode |= S_IWOTH;
|
||||
if(octal & 00001) *mode |= S_IXOTH;
|
||||
return;
|
||||
return -1;
|
||||
}
|
||||
mode = 0;
|
||||
if(octal & 04000) mode |= S_ISUID;
|
||||
if(octal & 02000) mode |= S_ISGID;
|
||||
if(octal & 01000) mode |= S_ISVTX;
|
||||
if(octal & 00400) mode |= S_IRUSR;
|
||||
if(octal & 00200) mode |= S_IWUSR;
|
||||
if(octal & 00100) mode |= S_IXUSR;
|
||||
if(octal & 00040) mode |= S_IRGRP;
|
||||
if(octal & 00020) mode |= S_IWGRP;
|
||||
if(octal & 00010) mode |= S_IXGRP;
|
||||
if(octal & 00004) mode |= S_IROTH;
|
||||
if(octal & 00002) mode |= S_IWOTH;
|
||||
if(octal & 00001) mode |= S_IXOTH;
|
||||
return mode;
|
||||
}
|
||||
for(p = str; *p; p++)
|
||||
for(p = str; *p; p++) {
|
||||
switch(*p) {
|
||||
/* masks */
|
||||
case 'u':
|
||||
mask |= S_IRWXU;
|
||||
gmask |= S_IRWXU;
|
||||
break;
|
||||
case 'g':
|
||||
mask |= S_IRWXG;
|
||||
gmask |= S_IRWXG;
|
||||
break;
|
||||
case 'o':
|
||||
mask |= S_IRWXO;
|
||||
gmask |= S_IRWXO;
|
||||
break;
|
||||
case 'a':
|
||||
mask |= S_IRWXU|S_IRWXG|S_IRWXO;
|
||||
gmask |= S_IRWXU|S_IRWXG|S_IRWXO;
|
||||
break;
|
||||
/* opers */
|
||||
case '=':
|
||||
case '+':
|
||||
case '-':
|
||||
case '=':
|
||||
if(oper)
|
||||
*oper = (int)*p;
|
||||
op = (int)*p;
|
||||
break;
|
||||
/* modes */
|
||||
case 'r':
|
||||
*mode |= S_IRUSR|S_IRGRP|S_IROTH;
|
||||
m |= S_IRUSR|S_IRGRP|S_IROTH;
|
||||
break;
|
||||
case 'w':
|
||||
*mode |= S_IWUSR|S_IWGRP|S_IWOTH;
|
||||
m |= S_IWUSR|S_IWGRP|S_IWOTH;
|
||||
break;
|
||||
case 'x':
|
||||
*mode |= S_IXUSR|S_IXGRP|S_IXOTH;
|
||||
m |= S_IXUSR|S_IXGRP|S_IXOTH;
|
||||
break;
|
||||
case 's':
|
||||
*mode |= S_ISUID|S_ISGID;
|
||||
m |= S_ISUID|S_ISGID;
|
||||
break;
|
||||
case 't':
|
||||
*mode |= S_ISVTX;
|
||||
m |= S_ISVTX;
|
||||
break;
|
||||
/* error */
|
||||
default:
|
||||
eprintf("%s: invalid mode\n", str);
|
||||
return -1;
|
||||
}
|
||||
if(mask)
|
||||
*mode &= mask;
|
||||
/* apply */
|
||||
switch(op) {
|
||||
case '+':
|
||||
mode |= (m & ((~mask) & 0777));
|
||||
break;
|
||||
case '-':
|
||||
mode &= (~(m & ((~mask) & 0777)));
|
||||
break;
|
||||
case '=':
|
||||
mode = (m & ((~mask) & 0777));
|
||||
break;
|
||||
}
|
||||
}
|
||||
if(gmask && op != '=')
|
||||
mode &= ~gmask;
|
||||
return mode;
|
||||
}
|
||||
|
|
|
|||
|
|
@ -107,7 +107,7 @@ parseheader(FILE *fp, const char *s, const char *header, mode_t *mode, char **fn
|
|||
eprintf("malformed mode string in header\n");
|
||||
*q++ = '\0';
|
||||
/* now mode should be null terminated, q points to fname */
|
||||
parsemode(p, mode, NULL);
|
||||
*mode = parsemode(p, *mode, 0);
|
||||
n = strlen(q);
|
||||
while (n > 0 && (q[n - 1] == '\n' || q[n - 1] == '\r'))
|
||||
q[--n] = '\0';
|
||||
|
|
|
|||
Loading…
Reference in New Issue