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Unified Diff: fusl/src/misc/nftw.c

Issue 1714623002: [fusl] clang-format fusl (Closed) Base URL: git@github.com:domokit/mojo.git@master
Patch Set: headers too Created 4 years, 10 months ago
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Index: fusl/src/misc/nftw.c
diff --git a/fusl/src/misc/nftw.c b/fusl/src/misc/nftw.c
index efb2b89524747397b0ccf3e5bbfb5438fd9ecd87..778943f99ab842bc04b7c9ccc8f66f297efed999 100644
--- a/fusl/src/misc/nftw.c
+++ b/fusl/src/misc/nftw.c
@@ -8,116 +8,127 @@
#include <pthread.h>
#include "libc.h"
-struct history
-{
- struct history *chain;
- dev_t dev;
- ino_t ino;
- int level;
- int base;
+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;
- char *name;
-
- 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 = l+1;
-
- lev.level = new.level;
- lev.base = h ? h->base : (name=strrchr(path, '/')) ? name-path : 0;
-
- 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;
+#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;
+ char* name;
+
+ 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 = l + 1;
+
+ lev.level = new.level;
+ lev.base = h ? h->base : (name = strrchr(path, '/')) ? name - path : 0;
+
+ 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);
-
- pthread_setcancelstate(PTHREAD_CANCEL_DISABLE, &cs);
- r = do_nftw(pathbuf, fn, fd_limit, flags, NULL);
- pthread_setcancelstate(cs, 0);
- return r;
+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);
+
+ pthread_setcancelstate(PTHREAD_CANCEL_DISABLE, &cs);
+ r = do_nftw(pathbuf, fn, fd_limit, flags, NULL);
+ pthread_setcancelstate(cs, 0);
+ return r;
}
LFS64(nftw);

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