diff options
Diffstat (limited to 'Utilities/cmlibuv/src/unix/fs.c')
| -rw-r--r-- | Utilities/cmlibuv/src/unix/fs.c | 291 |
1 files changed, 241 insertions, 50 deletions
diff --git a/Utilities/cmlibuv/src/unix/fs.c b/Utilities/cmlibuv/src/unix/fs.c index bffc956b5..5fb34f1be 100644 --- a/Utilities/cmlibuv/src/unix/fs.c +++ b/Utilities/cmlibuv/src/unix/fs.c @@ -47,7 +47,7 @@ #if defined(__DragonFly__) || \ defined(__FreeBSD__) || \ - defined(__FreeBSD_kernel_) || \ + defined(__FreeBSD_kernel__) || \ defined(__OpenBSD__) || \ defined(__NetBSD__) # define HAVE_PREADV 1 @@ -60,7 +60,6 @@ #endif #if defined(__APPLE__) -# include <copyfile.h> # include <sys/sysctl.h> #elif defined(__linux__) && !defined(FICLONE) # include <sys/ioctl.h> @@ -143,19 +142,34 @@ extern char *mkdtemp(char *template); /* See issue #740 on AIX < 7 */ while (0) +static int uv__fs_close(int fd) { + int rc; + + rc = uv__close_nocancel(fd); + if (rc == -1) + if (errno == EINTR || errno == EINPROGRESS) + rc = 0; /* The close is in progress, not an error. */ + + return rc; +} + + static ssize_t uv__fs_fsync(uv_fs_t* req) { #if defined(__APPLE__) /* Apple's fdatasync and fsync explicitly do NOT flush the drive write cache * to the drive platters. This is in contrast to Linux's fdatasync and fsync * which do, according to recent man pages. F_FULLFSYNC is Apple's equivalent * for flushing buffered data to permanent storage. If F_FULLFSYNC is not - * supported by the file system we should fall back to fsync(). This is the - * same approach taken by sqlite. + * supported by the file system we fall back to F_BARRIERFSYNC or fsync(). + * This is the same approach taken by sqlite, except sqlite does not issue + * an F_BARRIERFSYNC call. */ int r; r = fcntl(req->file, F_FULLFSYNC); if (r != 0) + r = fcntl(req->file, 85 /* F_BARRIERFSYNC */); /* fsync + barrier */ + if (r != 0) r = fsync(req->file); return r; #else @@ -178,7 +192,8 @@ static ssize_t uv__fs_fdatasync(uv_fs_t* req) { static ssize_t uv__fs_futime(uv_fs_t* req) { #if defined(__linux__) \ - || defined(_AIX71) + || defined(_AIX71) \ + || defined(__HAIKU__) /* utimesat() has nanosecond resolution but we stick to microseconds * for the sake of consistency with other platforms. */ @@ -219,7 +234,7 @@ static ssize_t uv__fs_futime(uv_fs_t* req) { #endif } -#if defined(__sun) && (_XOPEN_SOURCE < 600 || defined(CMAKE_BOOTSTRAP)) +#if (defined(__sun) || defined(__hpux)) && (_XOPEN_SOURCE < 600 || defined(CMAKE_BOOTSTRAP)) static char* uv__mkdtemp(char *template) { if (!mktemp(template) || mkdir(template, 0700)) @@ -327,6 +342,18 @@ done: req->bufs = NULL; req->nbufs = 0; +#ifdef __PASE__ + /* PASE returns EOPNOTSUPP when reading a directory, convert to EISDIR */ + if (result == -1 && errno == EOPNOTSUPP) { + struct stat buf; + ssize_t rc; + rc = fstat(req->file, &buf); + if (rc == 0 && S_ISDIR(buf.st_mode)) { + errno = EISDIR; + } + } +#endif + return result; } @@ -349,7 +376,7 @@ static int uv__fs_scandir_sort(UV_CONST_DIRENT** a, UV_CONST_DIRENT** b) { static ssize_t uv__fs_scandir(uv_fs_t* req) { - uv__dirent_t **dents; + uv__dirent_t** dents; int n; dents = NULL; @@ -373,6 +400,87 @@ static ssize_t uv__fs_scandir(uv_fs_t* req) { return n; } +static int uv__fs_opendir(uv_fs_t* req) { + uv_dir_t* dir; + + dir = uv__malloc(sizeof(*dir)); + if (dir == NULL) + goto error; + + dir->dir = opendir(req->path); + if (dir->dir == NULL) + goto error; + + req->ptr = dir; + return 0; + +error: + uv__free(dir); + req->ptr = NULL; + return -1; +} + +static int uv__fs_readdir(uv_fs_t* req) { + uv_dir_t* dir; + uv_dirent_t* dirent; + struct dirent* res; + unsigned int dirent_idx; + unsigned int i; + + dir = req->ptr; + dirent_idx = 0; + + while (dirent_idx < dir->nentries) { + /* readdir() returns NULL on end of directory, as well as on error. errno + is used to differentiate between the two conditions. */ + errno = 0; + res = readdir(dir->dir); + + if (res == NULL) { + if (errno != 0) + goto error; + break; + } + + if (strcmp(res->d_name, ".") == 0 || strcmp(res->d_name, "..") == 0) + continue; + + dirent = &dir->dirents[dirent_idx]; + dirent->name = uv__strdup(res->d_name); + + if (dirent->name == NULL) + goto error; + + dirent->type = uv__fs_get_dirent_type(res); + ++dirent_idx; + } + + return dirent_idx; + +error: + for (i = 0; i < dirent_idx; ++i) { + uv__free((char*) dir->dirents[i].name); + dir->dirents[i].name = NULL; + } + + return -1; +} + +static int uv__fs_closedir(uv_fs_t* req) { + uv_dir_t* dir; + + dir = req->ptr; + + if (dir->dir != NULL) { + closedir(dir->dir); + dir->dir = NULL; + } + + uv__free(req->ptr); + req->ptr = NULL; + return 0; +} + #if defined(_POSIX_PATH_MAX) # define UV__FS_PATH_MAX _POSIX_PATH_MAX #elif defined(PATH_MAX) @@ -702,7 +810,8 @@ static ssize_t uv__fs_sendfile(uv_fs_t* req) { static ssize_t uv__fs_utime(uv_fs_t* req) { #if defined(__linux__) \ || defined(_AIX71) \ - || defined(__sun) + || defined(__sun) \ + || defined(__HAIKU__) /* utimesat() has nanosecond resolution but we stick to microseconds * for the sake of consistency with other platforms. */ @@ -806,45 +915,6 @@ done: } static ssize_t uv__fs_copyfile(uv_fs_t* req) { -#if defined(__APPLE__) && !TARGET_OS_IPHONE - /* On macOS, use the native copyfile(3). */ - static int can_clone; - copyfile_flags_t flags; - char buf[64]; - size_t len; - int major; - - flags = COPYFILE_ALL; - - if (req->flags & UV_FS_COPYFILE_EXCL) - flags |= COPYFILE_EXCL; - - /* Check OS version. Cloning is only supported on macOS >= 10.12. */ - if (req->flags & UV_FS_COPYFILE_FICLONE_FORCE) { - if (can_clone == 0) { - len = sizeof(buf); - if (sysctlbyname("kern.osrelease", buf, &len, NULL, 0)) - return UV__ERR(errno); - - if (1 != sscanf(buf, "%d", &major)) - abort(); - - can_clone = -1 + 2 * (major >= 16); /* macOS >= 10.12 */ - } - - if (can_clone < 0) - return UV_ENOSYS; - } - - /* copyfile() simply ignores COPYFILE_CLONE if it's not supported. */ - if (req->flags & UV_FS_COPYFILE_FICLONE) - flags |= 1 << 24; /* COPYFILE_CLONE */ - - if (req->flags & UV_FS_COPYFILE_FICLONE_FORCE) - flags |= 1 << 25; /* COPYFILE_CLONE_FORCE */ - - return copyfile(req->path, req->new_path, NULL, flags); -#else uv_fs_t fs_req; uv_file srcfd; uv_file dstfd; @@ -971,7 +1041,6 @@ out: errno = UV__ERR(result); return -1; -#endif } static void uv__to_stat(struct stat* src, uv_stat_t* dst) { @@ -1051,10 +1120,84 @@ static void uv__to_stat(struct stat* src, uv_stat_t* dst) { } +static int uv__fs_statx(int fd, + const char* path, + int is_fstat, + int is_lstat, + uv_stat_t* buf) { + STATIC_ASSERT(UV_ENOSYS != -1); +#ifdef __linux__ + static int no_statx; + struct uv__statx statxbuf; + int dirfd; + int flags; + int mode; + int rc; + + if (no_statx) + return UV_ENOSYS; + + dirfd = AT_FDCWD; + flags = 0; /* AT_STATX_SYNC_AS_STAT */ + mode = 0xFFF; /* STATX_BASIC_STATS + STATX_BTIME */ + + if (is_fstat) { + dirfd = fd; + flags |= 0x1000; /* AT_EMPTY_PATH */ + } + + if (is_lstat) + flags |= AT_SYMLINK_NOFOLLOW; + + rc = uv__statx(dirfd, path, flags, mode, &statxbuf); + + if (rc == -1) { + /* EPERM happens when a seccomp filter rejects the system call. + * Has been observed with libseccomp < 2.3.3 and docker < 18.04. + */ + if (errno != EINVAL && errno != EPERM && errno != ENOSYS) + return -1; + + no_statx = 1; + return UV_ENOSYS; + } + + buf->st_dev = 256 * statxbuf.stx_dev_major + statxbuf.stx_dev_minor; + buf->st_mode = statxbuf.stx_mode; + buf->st_nlink = statxbuf.stx_nlink; + buf->st_uid = statxbuf.stx_uid; + buf->st_gid = statxbuf.stx_gid; + buf->st_rdev = statxbuf.stx_rdev_major; + buf->st_ino = statxbuf.stx_ino; + buf->st_size = statxbuf.stx_size; + buf->st_blksize = statxbuf.stx_blksize; + buf->st_blocks = statxbuf.stx_blocks; + buf->st_atim.tv_sec = statxbuf.stx_atime.tv_sec; + buf->st_atim.tv_nsec = statxbuf.stx_atime.tv_nsec; + buf->st_mtim.tv_sec = statxbuf.stx_mtime.tv_sec; + buf->st_mtim.tv_nsec = statxbuf.stx_mtime.tv_nsec; + buf->st_ctim.tv_sec = statxbuf.stx_ctime.tv_sec; + buf->st_ctim.tv_nsec = statxbuf.stx_ctime.tv_nsec; + buf->st_birthtim.tv_sec = statxbuf.stx_btime.tv_sec; + buf->st_birthtim.tv_nsec = statxbuf.stx_btime.tv_nsec; + buf->st_flags = 0; + buf->st_gen = 0; + + return 0; +#else + return UV_ENOSYS; +#endif /* __linux__ */ +} + + static int uv__fs_stat(const char *path, uv_stat_t *buf) { struct stat pbuf; int ret; + ret = uv__fs_statx(-1, path, /* is_fstat */ 0, /* is_lstat */ 0, buf); + if (ret != UV_ENOSYS) + return ret; + ret = stat(path, &pbuf); if (ret == 0) uv__to_stat(&pbuf, buf); @@ -1067,6 +1210,10 @@ static int uv__fs_lstat(const char *path, uv_stat_t *buf) { struct stat pbuf; int ret; + ret = uv__fs_statx(-1, path, /* is_fstat */ 0, /* is_lstat */ 1, buf); + if (ret != UV_ENOSYS) + return ret; + ret = lstat(path, &pbuf); if (ret == 0) uv__to_stat(&pbuf, buf); @@ -1079,6 +1226,10 @@ static int uv__fs_fstat(int fd, uv_stat_t *buf) { struct stat pbuf; int ret; + ret = uv__fs_statx(fd, "", /* is_fstat */ 1, /* is_lstat */ 0, buf); + if (ret != UV_ENOSYS) + return ret; + ret = fstat(fd, &pbuf); if (ret == 0) uv__to_stat(&pbuf, buf); @@ -1167,7 +1318,7 @@ static void uv__fs_work(struct uv__work* w) { X(ACCESS, access(req->path, req->flags)); X(CHMOD, chmod(req->path, req->mode)); X(CHOWN, chown(req->path, req->uid, req->gid)); - X(CLOSE, close(req->file)); + X(CLOSE, uv__fs_close(req->file)); X(COPYFILE, uv__fs_copyfile(req)); X(FCHMOD, fchmod(req->file, req->mode)); X(FCHOWN, fchown(req->file, req->uid, req->gid)); @@ -1184,6 +1335,9 @@ static void uv__fs_work(struct uv__work* w) { X(OPEN, uv__fs_open(req)); X(READ, uv__fs_read(req)); X(SCANDIR, uv__fs_scandir(req)); + X(OPENDIR, uv__fs_opendir(req)); + X(READDIR, uv__fs_readdir(req)); + X(CLOSEDIR, uv__fs_closedir(req)); X(READLINK, uv__fs_readlink(req)); X(REALPATH, uv__fs_realpath(req)); X(RENAME, rename(req->path, req->new_path)); @@ -1454,6 +1608,40 @@ int uv_fs_scandir(uv_loop_t* loop, POST; } +int uv_fs_opendir(uv_loop_t* loop, + uv_fs_t* req, + const char* path, + uv_fs_cb cb) { + INIT(OPENDIR); + PATH; + POST; +} + +int uv_fs_readdir(uv_loop_t* loop, + uv_fs_t* req, + uv_dir_t* dir, + uv_fs_cb cb) { + INIT(READDIR); + + if (dir == NULL || dir->dir == NULL || dir->dirents == NULL) + return UV_EINVAL; + + req->ptr = dir; + POST; +} + +int uv_fs_closedir(uv_loop_t* loop, + uv_fs_t* req, + uv_dir_t* dir, + uv_fs_cb cb) { + INIT(CLOSEDIR); + + if (dir == NULL) + return UV_EINVAL; + + req->ptr = dir; + POST; +} int uv_fs_readlink(uv_loop_t* loop, uv_fs_t* req, @@ -1594,6 +1782,9 @@ void uv_fs_req_cleanup(uv_fs_t* req) { req->path = NULL; req->new_path = NULL; + if (req->fs_type == UV_FS_READDIR && req->ptr != NULL) + uv__fs_readdir_cleanup(req); + if (req->fs_type == UV_FS_SCANDIR && req->ptr != NULL) uv__fs_scandir_cleanup(req); @@ -1601,7 +1792,7 @@ void uv_fs_req_cleanup(uv_fs_t* req) { uv__free(req->bufs); req->bufs = NULL; - if (req->ptr != &req->statbuf) + if (req->fs_type != UV_FS_OPENDIR && req->ptr != &req->statbuf) uv__free(req->ptr); req->ptr = NULL; } |