mirror of
git://sourceware.org/git/newlib-cygwin.git
synced 2025-02-21 00:07:36 +08:00
FTW Port for Newlib
Signed-off-by: Eshan Dhawan <eshandhawan51@gmail.com>
This commit is contained in:
Eshan dhawan
Corinna Vinschen
parent
55a6e49a08
commit
d8ee634506
66
newlib/libc/include/ftw.h
Normal file
66
newlib/libc/include/ftw.h
Normal file
@ -0,0 +1,66 @@
|
||||
/*
|
||||
* Copyright © 2005-2020 Rich Felker, et al.
|
||||
*
|
||||
* Permission is hereby granted, free of charge, to any person obtaining
|
||||
* a copy of this software and associated documentation files (the
|
||||
* "Software"), to deal in the Software without restriction, including
|
||||
* without limitation the rights to use, copy, modify, merge, publish,
|
||||
* distribute, sublicense, and/or sell copies of the Software, and to
|
||||
* permit persons to whom the Software is furnished to do so, subject to
|
||||
* the following conditions:
|
||||
*
|
||||
* The above copyright notice and this permission notice shall be
|
||||
* included in all copies or substantial portions of the Software.
|
||||
*
|
||||
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
|
||||
* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
|
||||
* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
|
||||
* IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY
|
||||
* CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
|
||||
* TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
|
||||
* SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
|
||||
*/
|
||||
|
||||
#ifndef _FTW_H
|
||||
#define _FTW_H
|
||||
|
||||
#ifdef __cplusplus
|
||||
extern "C" {
|
||||
#endif
|
||||
|
||||
#include <sys/features.h>
|
||||
#include <sys/stat.h>
|
||||
|
||||
/*
|
||||
* Valid flags for the 3rd argument to the function that is passed as the
|
||||
* second argument to ftw(3) and nftw(3). Say it three times fast!
|
||||
*/
|
||||
#define FTW_F 0 /* File. */
|
||||
#define FTW_D 1 /* Directory. */
|
||||
#define FTW_DNR 2 /* Directory without read permission. */
|
||||
#define FTW_DP 3 /* Directory with subdirectories visited. */
|
||||
#define FTW_NS 4 /* Unknown type; stat() failed. */
|
||||
#define FTW_SL 5 /* Symbolic link. */
|
||||
#define FTW_SLN 6 /* Sym link that names a nonexistent file. */
|
||||
|
||||
/*
|
||||
* Flags for use as the 4th argument to nftw(3). These may be ORed together.
|
||||
*/
|
||||
#define FTW_PHYS 0x01 /* Physical walk, don't follow sym links. */
|
||||
#define FTW_MOUNT 0x02 /* The walk does not cross a mount point. */
|
||||
#define FTW_DEPTH 0x04 /* Subdirs visited before the dir itself. */
|
||||
#define FTW_CHDIR 0x08 /* Change to a directory before reading it. */
|
||||
|
||||
struct FTW {
|
||||
int base;
|
||||
int level;
|
||||
};
|
||||
|
||||
int ftw(const char *, int (*)(const char *, const struct stat *, int), int);
|
||||
int nftw(const char *, int (*)(const char *, const struct stat *, int, struct FTW *), int, int);
|
||||
|
||||
#ifdef __cplusplus
|
||||
}
|
||||
#endif
|
||||
|
||||
#endif
|
||||
@ -10,7 +10,7 @@ GENERAL_SOURCES = \
|
||||
opendir.c readdir.c readdir_r.c \
|
||||
regcomp.c regerror.c regexec.c regfree.c \
|
||||
rewinddir.c sleep.c usleep.c \
|
||||
telldir.c
|
||||
telldir.c ftw.c nftw.c
|
||||
|
||||
ELIX_2_SOURCES = \
|
||||
scandir.c seekdir.c
|
||||
|
||||
33
newlib/libc/posix/ftw.c
Normal file
33
newlib/libc/posix/ftw.c
Normal file
@ -0,0 +1,33 @@
|
||||
/*
|
||||
* Copyright © 2005-2020 Rich Felker, et al.
|
||||
*
|
||||
* Permission is hereby granted, free of charge, to any person obtaining
|
||||
* a copy of this software and associated documentation files (the
|
||||
* "Software"), to deal in the Software without restriction, including
|
||||
* without limitation the rights to use, copy, modify, merge, publish,
|
||||
* distribute, sublicense, and/or sell copies of the Software, and to
|
||||
* permit persons to whom the Software is furnished to do so, subject to
|
||||
* the following conditions:
|
||||
*
|
||||
* The above copyright notice and this permission notice shall be
|
||||
* included in all copies or substantial portions of the Software.
|
||||
*
|
||||
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
|
||||
* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
|
||||
* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
|
||||
* IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY
|
||||
* CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
|
||||
* TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
|
||||
* SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
|
||||
*/
|
||||
|
||||
#include <ftw.h>
|
||||
|
||||
int ftw(const char *path, int (*fn)(const char *, const struct stat *, int), int fd_limit)
|
||||
{
|
||||
/* The following cast assumes that calling a function with one
|
||||
* argument more than it needs behaves as expected. This is
|
||||
* actually undefined, but works on all real-world machines. */
|
||||
return nftw(path, (int (*)())fn, fd_limit, FTW_PHYS);
|
||||
}
|
||||
|
||||
154
newlib/libc/posix/nftw.c
Normal file
154
newlib/libc/posix/nftw.c
Normal file
@ -0,0 +1,154 @@
|
||||
/*
|
||||
* Copyright © 2005-2020 Rich Felker, et al.
|
||||
*
|
||||
* Permission is hereby granted, free of charge, to any person obtaining
|
||||
* a copy of this software and associated documentation files (the
|
||||
* "Software"), to deal in the Software without restriction, including
|
||||
* without limitation the rights to use, copy, modify, merge, publish,
|
||||
* distribute, sublicense, and/or sell copies of the Software, and to
|
||||
* permit persons to whom the Software is furnished to do so, subject to
|
||||
* the following conditions:
|
||||
*
|
||||
* The above copyright notice and this permission notice shall be
|
||||
* included in all copies or substantial portions of the Software.
|
||||
*
|
||||
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
|
||||
* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
|
||||
* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
|
||||
* IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY
|
||||
* CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
|
||||
* TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
|
||||
* SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
|
||||
*/
|
||||
|
||||
#include <ftw.h>
|
||||
#include <dirent.h>
|
||||
#include <sys/stat.h>
|
||||
#include <errno.h>
|
||||
#include <unistd.h>
|
||||
#include <string.h>
|
||||
#include <limits.h>
|
||||
#include <pthread.h>
|
||||
|
||||
struct history
|
||||
{
|
||||
struct history *chain;
|
||||
dev_t dev;
|
||||
ino_t ino;
|
||||
int level;
|
||||
int base;
|
||||
};
|
||||
|
||||
#undef dirfd
|
||||
#define dirfd(d) (*(int *)d)
|
||||
|
||||
static int do_nftw(char *path, int (*fn)(const char *, const struct stat *, int, struct FTW *), int fd_limit, int flags, struct history *h)
|
||||
{
|
||||
size_t l = strlen(path), j = l && path[l-1]=='/' ? l-1 : l;
|
||||
struct stat st;
|
||||
struct history new;
|
||||
int type;
|
||||
int r;
|
||||
struct FTW lev;
|
||||
|
||||
if ((flags & FTW_PHYS) ? lstat(path, &st) : stat(path, &st) < 0) {
|
||||
if (!(flags & FTW_PHYS) && errno==ENOENT && !lstat(path, &st))
|
||||
type = FTW_SLN;
|
||||
else if (errno != EACCES) return -1;
|
||||
else type = FTW_NS;
|
||||
} else if (S_ISDIR(st.st_mode)) {
|
||||
if (access(path, R_OK) < 0) type = FTW_DNR;
|
||||
else if (flags & FTW_DEPTH) type = FTW_DP;
|
||||
else type = FTW_D;
|
||||
} else if (S_ISLNK(st.st_mode)) {
|
||||
if (flags & FTW_PHYS) type = FTW_SL;
|
||||
else type = FTW_SLN;
|
||||
} else {
|
||||
type = FTW_F;
|
||||
}
|
||||
|
||||
if ((flags & FTW_MOUNT) && h && st.st_dev != h->dev)
|
||||
return 0;
|
||||
|
||||
new.chain = h;
|
||||
new.dev = st.st_dev;
|
||||
new.ino = st.st_ino;
|
||||
new.level = h ? h->level+1 : 0;
|
||||
new.base = j+1;
|
||||
|
||||
lev.level = new.level;
|
||||
if (h) {
|
||||
lev.base = h->base;
|
||||
} else {
|
||||
size_t k;
|
||||
for (k=j; k && path[k]=='/'; k--);
|
||||
for (; k && path[k-1]!='/'; k--);
|
||||
lev.base = k;
|
||||
}
|
||||
|
||||
if (!(flags & FTW_DEPTH) && (r=fn(path, &st, type, &lev)))
|
||||
return r;
|
||||
|
||||
for (; h; h = h->chain)
|
||||
if (h->dev == st.st_dev && h->ino == st.st_ino)
|
||||
return 0;
|
||||
|
||||
if ((type == FTW_D || type == FTW_DP) && fd_limit) {
|
||||
DIR *d = opendir(path);
|
||||
if (d) {
|
||||
struct dirent *de;
|
||||
while ((de = readdir(d))) {
|
||||
if (de->d_name[0] == '.'
|
||||
&& (!de->d_name[1]
|
||||
|| (de->d_name[1]=='.'
|
||||
&& !de->d_name[2]))) continue;
|
||||
if (strlen(de->d_name) >= PATH_MAX-l) {
|
||||
errno = ENAMETOOLONG;
|
||||
closedir(d);
|
||||
return -1;
|
||||
}
|
||||
path[j]='/';
|
||||
strcpy(path+j+1, de->d_name);
|
||||
if ((r=do_nftw(path, fn, fd_limit-1, flags, &new))) {
|
||||
closedir(d);
|
||||
return r;
|
||||
}
|
||||
}
|
||||
closedir(d);
|
||||
} else if (errno != EACCES) {
|
||||
return -1;
|
||||
}
|
||||
}
|
||||
|
||||
path[l] = 0;
|
||||
if ((flags & FTW_DEPTH) && (r=fn(path, &st, type, &lev)))
|
||||
return r;
|
||||
|
||||
return 0;
|
||||
}
|
||||
|
||||
int nftw(const char *path, int (*fn)(const char *, const struct stat *, int, struct FTW *), int fd_limit, int flags)
|
||||
{
|
||||
int r, cs;
|
||||
size_t l;
|
||||
char pathbuf[PATH_MAX+1];
|
||||
|
||||
if (fd_limit <= 0) return 0;
|
||||
|
||||
l = strlen(path);
|
||||
if (l > PATH_MAX) {
|
||||
errno = ENAMETOOLONG;
|
||||
return -1;
|
||||
}
|
||||
memcpy(pathbuf, path, l+1);
|
||||
|
||||
#ifdef _STDIO_WITH_THREAD_CANCELLATION_SUPPORT
|
||||
pthread_setcancelstate(PTHREAD_CANCEL_DISABLE, &cs);
|
||||
#endif
|
||||
r = do_nftw(pathbuf, fn, fd_limit, flags, NULL);
|
||||
#ifdef _STDIO_WITH_THREAD_CANCELLATION_SUPPORT
|
||||
pthread_setcancelstate(cs, 0);
|
||||
#endif
|
||||
return r;
|
||||
}
|
||||
|
||||
Loading…
x
Reference in New Issue
Block a user