#include <sys/param.h>
#include <sys/stat.h>
#include <dirent.h>
#include <errno.h>
#include <fcntl.h>
#include <fts.h>
#include <limits.h>
#include <stdlib.h>
#include <string.h>
#include <unistd.h>
#include <stdbool.h>
#include <sys/vnode.h>
#include <sys/attr.h>
#include <os/assumes.h>
#ifdef __BLOCKS__
#include <Block.h>
#endif
#include <malloc_private.h>
static FTSENT *fts_alloc(FTS *, char *, ssize_t);
static FTSENT *fts_build(FTS *, int);
static void fts_lfree(FTSENT *);
static void fts_load(FTS *, FTSENT *);
static size_t fts_maxarglen(char * const *);
static void fts_padjust(FTS *, FTSENT *);
static int fts_palloc(FTS *, size_t);
static FTSENT *fts_sort(FTS *, FTSENT *, int);
static u_short fts_stat(FTS *, FTSENT *, int, int);
static u_short fts_stat2(FTS *, FTSENT *, int, int, struct stat *);
static int fts_safe_changedir(FTS *, FTSENT *, int, char *);
#define ISDOT(a) (a[0] == '.' && (!a[1] || (a[1] == '.' && !a[2])))
#define CLR(opt) (sp->fts_options &= ~(opt))
#define ISSET(opt) (sp->fts_options & (opt))
#define SET(opt) (sp->fts_options |= (opt))
#define FCHDIR(sp, fd) (!ISSET(FTS_NOCHDIR) && fchdir(fd))
#define BCHILD 1
#define BNAMES 2
#define BREAD 3
#define F_SHIFT 4
#define F_NOSTAT (0 << F_SHIFT)
#define F_STATDIRSYM (1 << F_SHIFT)
#define F_ALWAYSSTAT (2 << F_SHIFT)
#define F_STATDIR (3 << F_SHIFT)
#define F_D_TYPE (4 << F_SHIFT)
#define F_D_TYPESYM (5 << F_SHIFT)
static FTS *
__fts_open(char * const *argv, FTS *sp)
{
FTSENT *p, *root;
int nitems;
FTSENT *parent, *tmp;
ssize_t len;
if (ISSET(FTS_LOGICAL))
SET(FTS_NOCHDIR);
if (fts_palloc(sp, MAX(fts_maxarglen(argv), PATH_MAX)))
goto mem1;
if ((parent = fts_alloc(sp, "", 0)) == NULL)
goto mem2;
parent->fts_level = FTS_ROOTPARENTLEVEL;
for (root = NULL, nitems = 0; *argv; ++argv, ++nitems) {
len = strlen(*argv);
if ((p = fts_alloc(sp, *argv, len)) == NULL)
goto mem3;
p->fts_level = FTS_ROOTLEVEL;
p->fts_parent = parent;
p->fts_accpath = p->fts_name;
p->fts_info = fts_stat(sp, p, ISSET(FTS_COMFOLLOWDIR) ? -1 : ISSET(FTS_COMFOLLOW), -1);
if (p->fts_info == FTS_DOT)
p->fts_info = FTS_D;
if (sp->fts_compar) {
p->fts_link = root;
root = p;
} else {
p->fts_link = NULL;
if (root == NULL)
tmp = root = p;
else {
tmp->fts_link = p;
tmp = p;
}
}
}
if (sp->fts_compar && nitems > 1)
root = fts_sort(sp, root, nitems);
if ((sp->fts_cur = fts_alloc(sp, "", 0)) == NULL)
goto mem3;
sp->fts_cur->fts_link = root;
sp->fts_cur->fts_info = FTS_INIT;
if (!ISSET(FTS_NOCHDIR) &&
(sp->fts_rfd = open(".", O_RDONLY | O_CLOEXEC)) < 0)
SET(FTS_NOCHDIR);
if (nitems == 0)
free(parent);
return (sp);
mem3: fts_lfree(root);
free(parent);
mem2: free(sp->fts_path);
mem1: free(sp);
return (NULL);
}
FTS *
fts_open(char * const *argv, int options, int (*compar)())
{
FTS *sp;
if (options & ~FTS_OPTIONMASK) {
errno = EINVAL;
return (NULL);
}
if (options & FTS_NOSTAT_TYPE) options |= FTS_NOSTAT;
if ((sp = calloc(1, sizeof(FTS))) == NULL)
return (NULL);
sp->fts_compar = compar;
sp->fts_options = options;
return __fts_open(argv, sp);
}
#ifdef __BLOCKS__
FTS *
fts_open_b(char * const *argv, int options, int (^compar)(const FTSENT **, const FTSENT **))
{
FTS *sp;
if (options & ~FTS_OPTIONMASK) {
errno = EINVAL;
return (NULL);
}
if (options & FTS_NOSTAT_TYPE) options |= FTS_NOSTAT;
if ((sp = calloc(1, sizeof(FTS))) == NULL)
return (NULL);
sp->fts_compar_b = (int (^)())Block_copy(compar);
sp->fts_options = options | FTS_BLOCK_COMPAR;
return __fts_open(argv, sp);
}
#endif
static void
fts_load(FTS *sp, FTSENT *p)
{
ssize_t len;
char *cp;
len = p->fts_pathlen = p->fts_namelen;
memmove(sp->fts_path, p->fts_name, len + 1);
if ((cp = strrchr(p->fts_name, '/')) && (cp != p->fts_name || cp[1])) {
len = strlen(++cp);
memmove(p->fts_name, cp, len + 1);
p->fts_namelen = len;
}
p->fts_accpath = p->fts_path = sp->fts_path;
sp->fts_dev = p->fts_dev;
}
int
fts_close(FTS *sp)
{
FTSENT *freep, *p;
int rfd, error = 0;
if (sp->fts_cur) {
for (p = sp->fts_cur; p->fts_level >= FTS_ROOTLEVEL;) {
freep = p;
p = p->fts_link ? p->fts_link : p->fts_parent;
free(freep);
}
free(p);
}
rfd = ISSET(FTS_NOCHDIR) ? -1 : sp->fts_rfd;
if (sp->fts_child){
fts_lfree(sp->fts_child);
}
free(sp->fts_array); sp->fts_array = NULL;
free(sp->fts_path); sp->fts_path = NULL;
#ifdef __BLOCKS__
if (ISSET(FTS_BLOCK_COMPAR) && sp->fts_compar_b != NULL)
Block_release(sp->fts_compar_b);
#endif
free(sp);
if (rfd != -1) {
int saved_errno = errno;
if (fchdir(rfd) != 0){
error = -1;
saved_errno = errno;
}
if (close(rfd) != 0){
error = -1;
saved_errno = errno;
}
errno = saved_errno;
}
return (error);
}
#define NAPPEND(p) \
(p->fts_level == FTS_ROOTLEVEL && p->fts_pathlen == 1 && \
p->fts_path[0] == '/' ? 0 : p->fts_pathlen)
FTSENT *
fts_read(FTS *sp)
{
FTSENT *p, *tmp;
int instr;
char *t;
int saved_errno;
if (sp->fts_cur == NULL || ISSET(FTS_STOP))
return (NULL);
p = sp->fts_cur;
instr = p->fts_instr;
p->fts_instr = FTS_NOINSTR;
if (instr == FTS_AGAIN) {
p->fts_info = fts_stat(sp, p, 0, -1);
return (p);
}
if (instr == FTS_FOLLOW &&
(p->fts_info == FTS_SL || p->fts_info == FTS_SLNONE)) {
p->fts_info = fts_stat(sp, p, 1, -1);
if (p->fts_info == FTS_D && !ISSET(FTS_NOCHDIR)) {
if ((p->fts_symfd =
open(".", O_RDONLY | O_CLOEXEC)) < 0) {
p->fts_errno = errno;
p->fts_info = FTS_ERR;
} else {
p->fts_flags |= FTS_SYMFOLLOW;
}
}
return (p);
}
if (p->fts_info == FTS_D) {
if (instr == FTS_SKIP ||
(ISSET(FTS_XDEV) && p->fts_dev != sp->fts_dev)) {
if (p->fts_flags & FTS_SYMFOLLOW)
(void)close(p->fts_symfd);
if (sp->fts_child) {
fts_lfree(sp->fts_child);
sp->fts_child = NULL;
}
p->fts_info = FTS_DP;
return (p);
}
if (sp->fts_child && ISSET(FTS_NAMEONLY)) {
CLR(FTS_NAMEONLY);
fts_lfree(sp->fts_child);
sp->fts_child = NULL;
}
if (sp->fts_child) {
if (fts_safe_changedir(sp, p, -1, p->fts_accpath)) {
p->fts_errno = errno;
p->fts_flags |= FTS_DONTCHDIR;
for (p = sp->fts_child; p; p = p->fts_link)
p->fts_accpath =
p->fts_parent->fts_accpath;
}
} else if ((sp->fts_child = fts_build(sp, BREAD)) == NULL) {
if (ISSET(FTS_STOP))
return (NULL);
return (p);
}
p = sp->fts_child;
sp->fts_child = NULL;
goto name;
}
next: tmp = p;
if ((p = p->fts_link)) {
free(tmp);
if (p->fts_level == FTS_ROOTLEVEL) {
if (FCHDIR(sp, sp->fts_rfd)) {
SET(FTS_STOP);
return (NULL);
}
fts_load(sp, p);
return (sp->fts_cur = p);
}
if (p->fts_instr == FTS_SKIP) {
goto next;
}
if (p->fts_instr == FTS_FOLLOW) {
p->fts_info = fts_stat(sp, p, 1, -1);
if (p->fts_info == FTS_D && !ISSET(FTS_NOCHDIR)) {
if ((p->fts_symfd =
open(".", O_RDONLY | O_CLOEXEC, 0)) < 0) {
p->fts_errno = errno;
p->fts_info = FTS_ERR;
} else {
p->fts_flags |= FTS_SYMFOLLOW;
}
}
p->fts_instr = FTS_NOINSTR;
}
name: t = sp->fts_path + NAPPEND(p->fts_parent);
*t++ = '/';
memmove(t, p->fts_name, p->fts_namelen + 1);
return (sp->fts_cur = p);
}
p = tmp->fts_parent;
free(tmp);
if (p->fts_level == FTS_ROOTPARENTLEVEL) {
free(p);
errno = 0;
return (sp->fts_cur = NULL);
}
sp->fts_path[p->fts_pathlen] = '\0';
if (p->fts_level == FTS_ROOTLEVEL) {
if (FCHDIR(sp, sp->fts_rfd)) {
SET(FTS_STOP);
sp->fts_cur = p;
return (NULL);
}
} else if (p->fts_flags & FTS_SYMFOLLOW) {
if (FCHDIR(sp, p->fts_symfd)) {
saved_errno = errno;
(void)close(p->fts_symfd);
errno = saved_errno;
SET(FTS_STOP);
sp->fts_cur = p;
return (NULL);
}
(void)close(p->fts_symfd);
} else if (!(p->fts_flags & FTS_DONTCHDIR) &&
fts_safe_changedir(sp, p->fts_parent, -1, "..")) {
SET(FTS_STOP);
sp->fts_cur = p;
return (NULL);
}
p->fts_info = p->fts_errno ? FTS_ERR : FTS_DP;
return (sp->fts_cur = p);
}
int
fts_set(FTS __unused *sp, FTSENT *p, int instr)
{
if (instr && instr != FTS_AGAIN && instr != FTS_FOLLOW &&
instr != FTS_NOINSTR && instr != FTS_SKIP) {
errno = EINVAL;
return (1);
}
p->fts_instr = instr;
return (0);
}
FTSENT *
fts_children(FTS *sp, int instr)
{
FTSENT *p;
int fd;
if (instr && instr != FTS_NAMEONLY) {
errno = EINVAL;
return (NULL);
}
p = sp->fts_cur;
errno = 0;
if (ISSET(FTS_STOP))
return (NULL);
if (p->fts_info == FTS_INIT)
return (p->fts_link);
if (p->fts_info != FTS_D )
return (NULL);
if (sp->fts_child)
fts_lfree(sp->fts_child);
if (instr == FTS_NAMEONLY) {
SET(FTS_NAMEONLY);
instr = BNAMES;
} else
instr = BCHILD;
if (p->fts_level != FTS_ROOTLEVEL || p->fts_accpath[0] == '/' ||
ISSET(FTS_NOCHDIR))
return (sp->fts_child = fts_build(sp, instr));
if ((fd = open(".", O_RDONLY | O_CLOEXEC, 0)) < 0)
return (NULL);
sp->fts_child = fts_build(sp, instr);
if (fchdir(fd)) {
(void)close(fd);
return (NULL);
}
(void)close(fd);
return (sp->fts_child);
}
typedef struct __attribute__((packed)) __attribute__((__aligned__(4))) {
uint32_t length;
attribute_set_t attrset;
attrreference_t name;
dev_t st_dev;
fsobj_type_t objtype;
struct timespec st_birthtimespec;
struct timespec st_mtimespec;
struct timespec st_ctimespec;
struct timespec st_atimespec;
uid_t st_uid;
gid_t st_gid;
uint32_t accessmask;
uint32_t st_flags;
uint64_t st_ino;
uint32_t st_nlink;
off_t allocsize;
uint32_t st_blksize;
uint32_t st_rdev;
off_t st_size;
} attrListAttributes;
typedef struct __attribute__((packed)) {
uint32_t length;
attribute_set_t attrset;
attrreference_t name;
dev_t st_dev;
fsobj_type_t objtype;
uint64_t st_ino;
uint32_t st_nlink;
uint32_t st_rdev;
} attrListAttributes_nostat;
#define ATTR_BUF_SIZE (32*1024)
typedef struct {
DIR *dirp;
struct attrlist requested_attrs;
void *attrbuf;
union {
attrListAttributes *curattr;
attrListAttributes_nostat *curattr_nostat;
};
int dirfd;
bool done;
bool nostat;
bool needs_dot;
bool needs_dotdot;
int entry_count;
int cur_entry;
} dir_handle;
typedef struct {
char *d_name;
size_t d_namlen;
struct stat sb;
int d_type;
bool stat_valid;
} dir_entry;
static bool
advance_directory(dir_handle *handle)
{
if (handle->done) return true;
os_assert(handle->dirfd != -1);
handle->entry_count = getattrlistbulk(handle->dirfd, &handle->requested_attrs,
handle->attrbuf, ATTR_BUF_SIZE, FSOPT_PACK_INVAL_ATTRS);
if (handle->entry_count == -1) {
goto error;
} else if (handle->entry_count == 0) {
handle->done = true;
}
handle->cur_entry = 0;
handle->curattr = handle->attrbuf;
return true;
error: {
int saved_errno = errno;
close(handle->dirfd);
handle->dirfd = -1;
errno = saved_errno;
return false;
}
}
static bool
open_directory(FTS *sp, dir_handle *handle, const char *path)
{
memset(handle, 0, sizeof(*handle));
handle->nostat = ISSET(FTS_NOSTAT);
handle->needs_dot = handle->needs_dotdot = ISSET(FTS_SEEDOT);
handle->dirfd = open(path, O_RDONLY | O_NONBLOCK | O_DIRECTORY | O_CLOEXEC);
if (handle->dirfd == -1) goto fallback;
handle->attrbuf = malloc(ATTR_BUF_SIZE);
if (!handle->attrbuf) goto fallback;
handle->requested_attrs.bitmapcount = ATTR_BIT_MAP_COUNT;
if (!handle->nostat) {
handle->requested_attrs.commonattr =
ATTR_CMN_RETURNED_ATTRS|
ATTR_CMN_NAME|ATTR_CMN_DEVID|ATTR_CMN_OBJTYPE|
ATTR_CMN_CRTIME|ATTR_CMN_MODTIME|ATTR_CMN_CHGTIME|ATTR_CMN_ACCTIME|
ATTR_CMN_OWNERID|ATTR_CMN_GRPID|ATTR_CMN_ACCESSMASK|ATTR_CMN_FLAGS|
ATTR_CMN_FILEID;
handle->requested_attrs.fileattr = ATTR_FILE_LINKCOUNT|ATTR_FILE_ALLOCSIZE|
ATTR_FILE_IOBLOCKSIZE|ATTR_FILE_DEVTYPE|ATTR_FILE_DATALENGTH;
} else {
handle->requested_attrs.commonattr = ATTR_CMN_RETURNED_ATTRS|
ATTR_CMN_NAME|ATTR_CMN_DEVID|ATTR_CMN_OBJTYPE|
ATTR_CMN_FILEID;
handle->requested_attrs.fileattr = ATTR_FILE_LINKCOUNT;
}
if (advance_directory(handle)) {
return true;
}
fallback:
if (handle->dirfd != -1) close(handle->dirfd);
handle->dirfd = -1;
free(handle->attrbuf);
handle->attrbuf = NULL;
handle->dirp = opendir(path);
return (handle->dirp != NULL);
}
static bool
read_dirent(dir_handle *handle, dir_entry *entry)
{
if (handle->dirp) {
struct dirent *de = readdir(handle->dirp);
if (de == NULL) return false;
entry->d_name = de->d_name;
entry->d_namlen = de->d_namlen;
entry->d_type = de->d_type;
entry->stat_valid = false;
return true;
}
if (handle->dirfd == -1) {
return false;
}
if (handle->needs_dot) {
handle->needs_dot = false;
entry->d_name = ".";
entry->d_namlen = strlen(".");
entry->d_type = DT_DIR;
entry->stat_valid = false;
return true;
} else if (handle->needs_dotdot) {
handle->needs_dotdot = false;
entry->d_name = "..";
entry->d_namlen = strlen("..");
entry->d_type = DT_DIR;
entry->stat_valid = false;
return true;
}
if (handle->cur_entry == handle->entry_count) {
if (handle->done) return false;
if (!advance_directory(handle)) return false;
if (handle->done) return false;
}
bzero(entry, sizeof(*entry));
attrListAttributes *curattr_stat = NULL;
attrListAttributes_nostat *curattr_nostat = NULL;
if (!handle->nostat) {
curattr_stat = handle->curattr;
handle->cur_entry++;
handle->curattr = (attrListAttributes*)(((char*)curattr_stat) + curattr_stat->length);
os_assert((handle->cur_entry == handle->entry_count) ||
(void*)handle->curattr + handle->curattr->length <= (void*)handle->attrbuf + ATTR_BUF_SIZE);
os_assert(curattr_stat->name.attr_length > 0);
entry->d_name = ((char*)&curattr_stat->name) + curattr_stat->name.attr_dataoffset;
entry->d_namlen = curattr_stat->name.attr_length - 1;
os_assert((void*)entry->d_name + curattr_stat->name.attr_length <= (void*)handle->attrbuf + ATTR_BUF_SIZE);
} else {
curattr_nostat = handle->curattr_nostat;
handle->cur_entry++;
handle->curattr_nostat = (attrListAttributes_nostat*)(((char*)curattr_nostat) + curattr_nostat->length);
os_assert((handle->cur_entry == handle->entry_count) ||
(void*)handle->curattr + handle->curattr->length <= (void*)handle->attrbuf + ATTR_BUF_SIZE);
os_assert(curattr_nostat->name.attr_length > 0);
entry->d_name = ((char*)&curattr_nostat->name) + curattr_nostat->name.attr_dataoffset;
entry->d_namlen = curattr_nostat->name.attr_length - 1;
os_assert((void*)entry->d_name + curattr_nostat->name.attr_length <= (void*)handle->attrbuf + ATTR_BUF_SIZE);
}
int stat_type = 0;
switch (handle->nostat ? curattr_nostat->objtype : curattr_stat->objtype) {
case VREG:
entry->d_type = DT_REG;
stat_type = S_IFREG;
break;
case VDIR:
entry->d_type = DT_DIR;
break;
case VBLK:
entry->d_type = DT_BLK;
stat_type = S_IFBLK;
break;
case VCHR:
entry->d_type = DT_CHR;
stat_type = S_IFCHR;
break;
case VLNK:
entry->d_type = DT_LNK;
stat_type = S_IFLNK;
break;
case VSOCK:
entry->d_type = DT_SOCK;
stat_type = S_IFSOCK;
break;
case VFIFO:
entry->d_type = DT_FIFO;
stat_type = S_IFIFO;
break;
default:
entry->d_type = DT_UNKNOWN;
break;
}
if (!handle->nostat && stat_type) {
entry->stat_valid = true;
attrgroup_t requiredCommon = handle->requested_attrs.commonattr;
attrgroup_t requiredFile = handle->requested_attrs.fileattr;
if ((entry->d_type != DT_BLK) && (entry->d_type != DT_CHR)) {
curattr_stat->st_rdev = 0;
requiredFile &= ~ATTR_FILE_DEVTYPE;
}
if ((curattr_stat->attrset.commonattr & ATTR_CMN_CRTIME) == 0) {
curattr_stat->st_birthtimespec.tv_sec = curattr_stat->st_birthtimespec.tv_nsec = 0;
requiredCommon &= ~ ATTR_CMN_CRTIME;
}
if ((curattr_stat->attrset.commonattr & requiredCommon) != requiredCommon ||
(curattr_stat->attrset.fileattr & requiredFile) != requiredFile) {
entry->stat_valid = false;
}
} else {
entry->stat_valid = false;
}
if (entry->stat_valid) {
#define COPY_FIELD(fld) entry->sb.fld = curattr_stat->fld
COPY_FIELD(st_dev);
COPY_FIELD(st_nlink);
COPY_FIELD(st_ino);
COPY_FIELD(st_uid);
COPY_FIELD(st_gid);
COPY_FIELD(st_rdev);
COPY_FIELD(st_atimespec);
COPY_FIELD(st_mtimespec);
COPY_FIELD(st_ctimespec);
#if __DARWIN_64_BIT_INO_T
COPY_FIELD(st_birthtimespec);
#endif
COPY_FIELD(st_size);
COPY_FIELD(st_blksize);
COPY_FIELD(st_flags);
#undef COPY_FIELD
entry->sb.st_mode = (curattr_stat->accessmask & ~S_IFMT) | stat_type;
entry->sb.st_blocks = howmany(curattr_stat->allocsize, 512);
}
return true;
}
static int
dir_fd(dir_handle *handle)
{
return handle->dirp ? dirfd(handle->dirp) : handle->dirfd;
}
static void
close_directory(dir_handle *handle)
{
if (handle->dirp) {
closedir(handle->dirp);
handle->dirp = NULL;
}
if (handle->dirfd != -1) {
close(handle->dirfd);
handle->dirfd = -1;
}
free(handle->attrbuf);
handle->attrbuf = NULL;
}
static FTSENT *
fts_build(FTS *sp, int type)
{
dir_entry de = { 0 };
dir_entry *dp = &de;
FTSENT *p, *head;
int nitems;
FTSENT *cur, *tail;
dir_handle dirp;
void *oldaddr;
int len, maxlen;
int cderrno, descend, level, dostat, doadjust;
int saved_errno;
char *cp;
cur = sp->fts_cur;
if (!open_directory(sp, &dirp, cur->fts_accpath)) {
if (type == BREAD) {
cur->fts_info = FTS_DNR;
cur->fts_errno = errno;
}
return (NULL);
}
if (type == BNAMES)
dostat = F_NOSTAT;
else if (ISSET(FTS_NOSTAT_TYPE))
dostat = ISSET(FTS_PHYSICAL) ? F_D_TYPE : F_D_TYPESYM;
else if (ISSET(FTS_NOSTAT))
dostat = ISSET(FTS_PHYSICAL) ? F_STATDIR : F_STATDIRSYM;
else
dostat = F_ALWAYSSTAT;
#ifdef notdef
(void)printf("dostat == %d\n", dostat);
(void)printf("NOSTAT %d PHYSICAL %d SEEDOT %d\n",
ISSET(FTS_NOSTAT), ISSET(FTS_PHYSICAL), ISSET(FTS_SEEDOT));
#endif
cderrno = 0;
if (dostat || type == BREAD) {
if (fts_safe_changedir(sp, cur, dir_fd(&dirp), NULL)) {
if (dostat && type == BREAD) {
cur->fts_errno = errno;
}
cur->fts_flags |= FTS_DONTCHDIR;
descend = 0;
cderrno = errno;
close_directory(&dirp);
} else {
descend = 1;
}
} else {
descend = 0;
}
len = NAPPEND(cur);
if (ISSET(FTS_NOCHDIR)) {
cp = sp->fts_path + len;
*cp++ = '/';
}
len++;
maxlen = sp->fts_pathlen - len;
level = cur->fts_level;
if (level < FTS_MAXLEVEL)
level++;
doadjust = 0;
for (head = tail = NULL, nitems = 0; read_dirent(&dirp, dp) ; ) {
if (!ISSET(FTS_SEEDOT) && ISDOT(dp->d_name))
continue;
if ((p = fts_alloc(sp, dp->d_name, (int)dp->d_namlen)) == NULL)
goto mem1;
if (dp->d_namlen >= (size_t)maxlen) {
oldaddr = sp->fts_path;
if (fts_palloc(sp, dp->d_namlen +len + 1)) {
mem1: saved_errno = errno;
free(p);
fts_lfree(head);
close_directory(&dirp);
cur->fts_info = FTS_ERR;
SET(FTS_STOP);
errno = saved_errno;
return (NULL);
}
if (oldaddr != sp->fts_path) {
doadjust = 1;
if (ISSET(FTS_NOCHDIR))
cp = sp->fts_path + len;
}
maxlen = sp->fts_pathlen - len;
}
if (len + dp->d_namlen >= USHRT_MAX) {
free(p);
fts_lfree(head);
close_directory(&dirp);
cur->fts_info = FTS_ERR;
SET(FTS_STOP);
errno = ENAMETOOLONG;
return (NULL);
}
p->fts_level = level;
p->fts_parent = sp->fts_cur;
p->fts_pathlen = len + dp->d_namlen;
if (cderrno) {
if (dostat) {
p->fts_info = FTS_NS;
p->fts_errno = cderrno;
} else
p->fts_info = FTS_NSOK;
p->fts_accpath = cur->fts_accpath;
} else {
switch(dostat | dp->d_type) {
case (F_STATDIR | DT_UNKNOWN):
case (F_STATDIR | DT_DIR):
case (F_STATDIRSYM | DT_UNKNOWN):
case (F_STATDIRSYM | DT_DIR):
case (F_STATDIRSYM | DT_LNK):
case (F_ALWAYSSTAT | DT_UNKNOWN):
case (F_ALWAYSSTAT | DT_FIFO):
case (F_ALWAYSSTAT | DT_CHR):
case (F_ALWAYSSTAT | DT_DIR):
case (F_ALWAYSSTAT | DT_BLK):
case (F_ALWAYSSTAT | DT_REG):
case (F_ALWAYSSTAT | DT_LNK):
case (F_ALWAYSSTAT | DT_SOCK):
case (F_ALWAYSSTAT | DT_WHT):
case (F_D_TYPE | DT_UNKNOWN):
case (F_D_TYPE | DT_DIR):
case (F_D_TYPESYM | DT_UNKNOWN):
case (F_D_TYPESYM | DT_DIR):
case (F_D_TYPESYM | DT_LNK):
if (ISSET(FTS_NOCHDIR)) {
p->fts_accpath = p->fts_path;
memmove(cp, p->fts_name, p->fts_namelen + 1);
p->fts_info = fts_stat2(sp, p, 0, dir_fd(&dirp), dp->stat_valid ? &dp->sb : NULL);
} else {
p->fts_accpath = p->fts_name;
p->fts_info = fts_stat2(sp, p, 0, -1, dp->stat_valid ? &dp->sb : NULL);
}
break;
case (F_D_TYPE | DT_FIFO):
case (F_D_TYPE | DT_CHR):
case (F_D_TYPE | DT_BLK):
case (F_D_TYPE | DT_SOCK):
case (F_D_TYPESYM | DT_FIFO):
case (F_D_TYPESYM | DT_CHR):
case (F_D_TYPESYM | DT_BLK):
case (F_D_TYPESYM | DT_SOCK):
p->fts_info = FTS_DEFAULT;
goto common_no_stat;
case (F_D_TYPE | DT_REG):
case (F_D_TYPESYM | DT_REG):
p->fts_info = FTS_F;
goto common_no_stat;
case (F_D_TYPE | DT_LNK):
p->fts_info = FTS_SL;
goto common_no_stat;
case (F_D_TYPE | DT_WHT):
case (F_D_TYPESYM | DT_WHT):
p->fts_info = FTS_W;
goto common_no_stat;
default:
p->fts_info = FTS_NSOK;
common_no_stat:
p->fts_accpath =
ISSET(FTS_NOCHDIR) ? p->fts_path : p->fts_name;
break;
}
}
p->fts_link = NULL;
if (head == NULL)
head = tail = p;
else {
tail->fts_link = p;
tail = p;
}
++nitems;
}
close_directory(&dirp);
if (doadjust)
fts_padjust(sp, head);
if (ISSET(FTS_NOCHDIR)) {
if (len == sp->fts_pathlen || nitems == 0)
--cp;
*cp = '\0';
}
if (descend && (type == BCHILD || !nitems) &&
(cur->fts_level == FTS_ROOTLEVEL ? FCHDIR(sp, sp->fts_rfd) :
fts_safe_changedir(sp, cur->fts_parent, -1, ".."))) {
cur->fts_info = FTS_ERR;
SET(FTS_STOP);
return (NULL);
}
if (!nitems) {
if (type == BREAD)
cur->fts_info = FTS_DP;
return (NULL);
}
if (sp->fts_compar && nitems > 1)
head = fts_sort(sp, head, nitems);
return (head);
}
static u_short
fts_stat(FTS *sp, FTSENT *p, int follow, int dfd)
{
return fts_stat2(sp, p, follow, dfd, NULL);
}
static u_short
fts_stat2(FTS *sp, FTSENT *p, int follow, int dfd, struct stat *insb)
{
FTSENT *t;
dev_t dev;
ino_t ino;
struct stat *sbp, sb;
int saved_errno;
const char *path;
if (dfd == -1) {
path = p->fts_accpath;
dfd = AT_FDCWD;
} else {
path = p->fts_name;
}
sbp = ISSET(FTS_NOSTAT) ? &sb : p->fts_statp;
if (follow) {
insb = NULL;
} else if (insb && ISSET(FTS_LOGICAL) && ((insb->st_mode & S_IFLNK) == S_IFLNK)) {
insb = NULL;
}
if (insb) {
memcpy(sbp, insb, sizeof(*insb));
} else if (ISSET(FTS_LOGICAL) || follow) {
if (fstatat(dfd, path, sbp, 0)) {
saved_errno = errno;
if (!fstatat(dfd, path, sbp, AT_SYMLINK_NOFOLLOW)) {
if (saved_errno == ELOOP)
p->fts_errno = ELOOP;
errno = 0;
return (FTS_SLNONE);
}
p->fts_errno = saved_errno;
goto err;
}
if (follow == -1 && !S_ISDIR(sbp->st_mode)) {
if (fstatat(dfd, path, sbp, AT_SYMLINK_NOFOLLOW)) {
p->fts_errno = errno;
goto err;
}
}
} else if (fstatat(dfd, path, sbp, AT_SYMLINK_NOFOLLOW)) {
p->fts_errno = errno;
err: memset(sbp, 0, sizeof(struct stat));
return (FTS_NS);
}
if (S_ISDIR(sbp->st_mode)) {
dev = p->fts_dev = sbp->st_dev;
ino = p->fts_ino = sbp->st_ino;
p->fts_nlink = sbp->st_nlink;
if (ISDOT(p->fts_name))
return (FTS_DOT);
for (t = p->fts_parent;
t->fts_level >= FTS_ROOTLEVEL; t = t->fts_parent)
if (ino == t->fts_ino && dev == t->fts_dev) {
p->fts_cycle = t;
return (FTS_DC);
}
return (FTS_D);
}
if (S_ISLNK(sbp->st_mode))
return (FTS_SL);
if (S_ISREG(sbp->st_mode))
return (FTS_F);
return (FTS_DEFAULT);
}
static FTSENT *
fts_sort(FTS *sp, FTSENT *head, int nitems)
{
FTSENT **ap, *p;
if (nitems > sp->fts_nitems) {
struct _ftsent **a;
sp->fts_nitems = nitems + 40;
if ((a = reallocarray(sp->fts_array,
sp->fts_nitems, sizeof(FTSENT *))) == NULL) {
free(sp->fts_array);
sp->fts_array = NULL;
sp->fts_nitems = 0;
return (head);
}
sp->fts_array = a;
}
for (ap = sp->fts_array, p = head; p; p = p->fts_link)
*ap++ = p;
#ifdef __BLOCKS__
if (ISSET(FTS_BLOCK_COMPAR))
qsort_b((void *)sp->fts_array, nitems, sizeof(FTSENT *), (int (^)(const void *, const void *))sp->fts_compar_b);
else
#endif
qsort((void *)sp->fts_array, nitems, sizeof(FTSENT *), sp->fts_compar);
for (head = *(ap = sp->fts_array); --nitems; ++ap)
ap[0]->fts_link = ap[1];
ap[0]->fts_link = NULL;
return (head);
}
static FTSENT *
fts_alloc(FTS *sp, char *name, ssize_t namelen)
{
FTSENT *p;
size_t len;
len = sizeof(FTSENT) + namelen;
if (!ISSET(FTS_NOSTAT))
len += sizeof(struct stat) + ALIGNBYTES;
if ((p = calloc(1, len)) == NULL)
return (NULL);
p->fts_path = sp->fts_path;
p->fts_namelen = namelen;
p->fts_instr = FTS_NOINSTR;
if (!ISSET(FTS_NOSTAT))
p->fts_statp = (struct stat *)ALIGN(p->fts_name + namelen + 2);
memcpy(p->fts_name, name, namelen);
return (p);
}
static void
fts_lfree(FTSENT *head)
{
FTSENT *p;
while ((p = head)) {
head = head->fts_link;
free(p);
}
}
static int
fts_palloc(FTS *sp, size_t more)
{
char *p;
sp->fts_pathlen += more + 256;
if (sp->fts_pathlen < 0 || sp->fts_pathlen >= USHRT_MAX) {
free(sp->fts_path);
sp->fts_path = NULL;
errno = ENAMETOOLONG;
return (1);
}
p = realloc(sp->fts_path, sp->fts_pathlen);
if (p == NULL) {
free(sp->fts_path);
sp->fts_path = NULL;
return (1);
}
sp->fts_path = p;
return (0);
}
static void
fts_padjust(FTS *sp, FTSENT *head)
{
FTSENT *p;
char *addr = sp->fts_path;
#define ADJUST(p) { \
if ((p)->fts_accpath != (p)->fts_name) { \
(p)->fts_accpath = \
(char *)addr + ((p)->fts_accpath - (p)->fts_path); \
} \
(p)->fts_path = addr; \
}
for (p = sp->fts_child; p; p = p->fts_link)
ADJUST(p);
for (p = head; p->fts_level >= FTS_ROOTLEVEL;) {
ADJUST(p);
p = p->fts_link ? p->fts_link : p->fts_parent;
}
}
static size_t
fts_maxarglen(char * const *argv)
{
size_t len, max;
for (max = 0; *argv; ++argv)
if ((len = strlen(*argv)) > max)
max = len;
return (max + 1);
}
static int
fts_safe_changedir(FTS *sp, FTSENT *p, int fd, char *path)
{
int ret, oerrno, newfd;
struct stat sb;
newfd = fd;
if (ISSET(FTS_NOCHDIR))
return (0);
if (fd < 0 && (newfd = open(path, O_RDONLY|O_DIRECTORY|O_CLOEXEC)) < 0)
return (-1);
if (fstat(newfd, &sb)) {
ret = -1;
goto bail;
}
#if 0
if (p->fts_dev != sb.st_dev || p->fts_ino != sb.st_ino) {
errno = ENOENT;
ret = -1;
goto bail;
}
#endif
ret = fchdir(newfd);
bail:
oerrno = errno;
if (fd < 0)
(void)close(newfd);
errno = oerrno;
return (ret);
}