diff options
Diffstat (limited to 'app/nginx/src/os/unix/ngx_files.c')
| -rw-r--r-- | app/nginx/src/os/unix/ngx_files.c | 906 |
1 files changed, 0 insertions, 906 deletions
diff --git a/app/nginx/src/os/unix/ngx_files.c b/app/nginx/src/os/unix/ngx_files.c deleted file mode 100644 index 7fbb7c9..0000000 --- a/app/nginx/src/os/unix/ngx_files.c +++ /dev/null @@ -1,906 +0,0 @@ - -/* - * Copyright (C) Igor Sysoev - * Copyright (C) Nginx, Inc. - */ - - -#include <ngx_config.h> -#include <ngx_core.h> - - -#if (NGX_THREADS) -#include <ngx_thread_pool.h> -static void ngx_thread_read_handler(void *data, ngx_log_t *log); -static void ngx_thread_write_chain_to_file_handler(void *data, ngx_log_t *log); -#endif - -static ngx_chain_t *ngx_chain_to_iovec(ngx_iovec_t *vec, ngx_chain_t *cl); -static ssize_t ngx_writev_file(ngx_file_t *file, ngx_iovec_t *vec, - off_t offset); - - -#if (NGX_HAVE_FILE_AIO) - -ngx_uint_t ngx_file_aio = 1; - -#endif - - -ssize_t -ngx_read_file(ngx_file_t *file, u_char *buf, size_t size, off_t offset) -{ - ssize_t n; - - ngx_log_debug4(NGX_LOG_DEBUG_CORE, file->log, 0, - "read: %d, %p, %uz, %O", file->fd, buf, size, offset); - -#if (NGX_HAVE_PREAD) - - n = pread(file->fd, buf, size, offset); - - if (n == -1) { - ngx_log_error(NGX_LOG_CRIT, file->log, ngx_errno, - "pread() \"%s\" failed", file->name.data); - return NGX_ERROR; - } - -#else - - if (file->sys_offset != offset) { - if (lseek(file->fd, offset, SEEK_SET) == -1) { - ngx_log_error(NGX_LOG_CRIT, file->log, ngx_errno, - "lseek() \"%s\" failed", file->name.data); - return NGX_ERROR; - } - - file->sys_offset = offset; - } - - n = read(file->fd, buf, size); - - if (n == -1) { - ngx_log_error(NGX_LOG_CRIT, file->log, ngx_errno, - "read() \"%s\" failed", file->name.data); - return NGX_ERROR; - } - - file->sys_offset += n; - -#endif - - file->offset += n; - - return n; -} - - -#if (NGX_THREADS) - -typedef struct { - ngx_fd_t fd; - ngx_uint_t write; /* unsigned write:1; */ - - u_char *buf; - size_t size; - ngx_chain_t *chain; - off_t offset; - - size_t nbytes; - ngx_err_t err; -} ngx_thread_file_ctx_t; - - -ssize_t -ngx_thread_read(ngx_file_t *file, u_char *buf, size_t size, off_t offset, - ngx_pool_t *pool) -{ - ngx_thread_task_t *task; - ngx_thread_file_ctx_t *ctx; - - ngx_log_debug4(NGX_LOG_DEBUG_CORE, file->log, 0, - "thread read: %d, %p, %uz, %O", - file->fd, buf, size, offset); - - task = file->thread_task; - - if (task == NULL) { - task = ngx_thread_task_alloc(pool, sizeof(ngx_thread_file_ctx_t)); - if (task == NULL) { - return NGX_ERROR; - } - - file->thread_task = task; - } - - ctx = task->ctx; - - if (task->event.complete) { - task->event.complete = 0; - - if (ctx->write) { - ngx_log_error(NGX_LOG_ALERT, file->log, 0, - "invalid thread call, read instead of write"); - return NGX_ERROR; - } - - if (ctx->err) { - ngx_log_error(NGX_LOG_CRIT, file->log, ctx->err, - "pread() \"%s\" failed", file->name.data); - return NGX_ERROR; - } - - return ctx->nbytes; - } - - task->handler = ngx_thread_read_handler; - - ctx->write = 0; - - ctx->fd = file->fd; - ctx->buf = buf; - ctx->size = size; - ctx->offset = offset; - - if (file->thread_handler(task, file) != NGX_OK) { - return NGX_ERROR; - } - - return NGX_AGAIN; -} - - -#if (NGX_HAVE_PREAD) - -static void -ngx_thread_read_handler(void *data, ngx_log_t *log) -{ - ngx_thread_file_ctx_t *ctx = data; - - ssize_t n; - - ngx_log_debug0(NGX_LOG_DEBUG_CORE, log, 0, "thread read handler"); - - n = pread(ctx->fd, ctx->buf, ctx->size, ctx->offset); - - if (n == -1) { - ctx->err = ngx_errno; - - } else { - ctx->nbytes = n; - ctx->err = 0; - } - -#if 0 - ngx_time_update(); -#endif - - ngx_log_debug4(NGX_LOG_DEBUG_CORE, log, 0, - "pread: %z (err: %d) of %uz @%O", - n, ctx->err, ctx->size, ctx->offset); -} - -#else - -#error pread() is required! - -#endif - -#endif /* NGX_THREADS */ - - -ssize_t -ngx_write_file(ngx_file_t *file, u_char *buf, size_t size, off_t offset) -{ - ssize_t n, written; - ngx_err_t err; - - ngx_log_debug4(NGX_LOG_DEBUG_CORE, file->log, 0, - "write: %d, %p, %uz, %O", file->fd, buf, size, offset); - - written = 0; - -#if (NGX_HAVE_PWRITE) - - for ( ;; ) { - n = pwrite(file->fd, buf + written, size, offset); - - if (n == -1) { - err = ngx_errno; - - if (err == NGX_EINTR) { - ngx_log_debug0(NGX_LOG_DEBUG_CORE, file->log, err, - "pwrite() was interrupted"); - continue; - } - - ngx_log_error(NGX_LOG_CRIT, file->log, err, - "pwrite() \"%s\" failed", file->name.data); - return NGX_ERROR; - } - - file->offset += n; - written += n; - - if ((size_t) n == size) { - return written; - } - - offset += n; - size -= n; - } - -#else - - if (file->sys_offset != offset) { - if (lseek(file->fd, offset, SEEK_SET) == -1) { - ngx_log_error(NGX_LOG_CRIT, file->log, ngx_errno, - "lseek() \"%s\" failed", file->name.data); - return NGX_ERROR; - } - - file->sys_offset = offset; - } - - for ( ;; ) { - n = write(file->fd, buf + written, size); - - if (n == -1) { - err = ngx_errno; - - if (err == NGX_EINTR) { - ngx_log_debug0(NGX_LOG_DEBUG_CORE, file->log, err, - "write() was interrupted"); - continue; - } - - ngx_log_error(NGX_LOG_CRIT, file->log, err, - "write() \"%s\" failed", file->name.data); - return NGX_ERROR; - } - - file->sys_offset += n; - file->offset += n; - written += n; - - if ((size_t) n == size) { - return written; - } - - size -= n; - } -#endif -} - - -ngx_fd_t -ngx_open_tempfile(u_char *name, ngx_uint_t persistent, ngx_uint_t access) -{ - ngx_fd_t fd; - - fd = open((const char *) name, O_CREAT|O_EXCL|O_RDWR, - access ? access : 0600); - - if (fd != -1 && !persistent) { - (void) unlink((const char *) name); - } - - return fd; -} - - -ssize_t -ngx_write_chain_to_file(ngx_file_t *file, ngx_chain_t *cl, off_t offset, - ngx_pool_t *pool) -{ - ssize_t total, n; - ngx_iovec_t vec; - struct iovec iovs[NGX_IOVS_PREALLOCATE]; - - /* use pwrite() if there is the only buf in a chain */ - - if (cl->next == NULL) { - return ngx_write_file(file, cl->buf->pos, - (size_t) (cl->buf->last - cl->buf->pos), - offset); - } - - total = 0; - - vec.iovs = iovs; - vec.nalloc = NGX_IOVS_PREALLOCATE; - - do { - /* create the iovec and coalesce the neighbouring bufs */ - cl = ngx_chain_to_iovec(&vec, cl); - - /* use pwrite() if there is the only iovec buffer */ - - if (vec.count == 1) { - n = ngx_write_file(file, (u_char *) iovs[0].iov_base, - iovs[0].iov_len, offset); - - if (n == NGX_ERROR) { - return n; - } - - return total + n; - } - - n = ngx_writev_file(file, &vec, offset); - - if (n == NGX_ERROR) { - return n; - } - - offset += n; - total += n; - - } while (cl); - - return total; -} - - -static ngx_chain_t * -ngx_chain_to_iovec(ngx_iovec_t *vec, ngx_chain_t *cl) -{ - size_t total, size; - u_char *prev; - ngx_uint_t n; - struct iovec *iov; - - iov = NULL; - prev = NULL; - total = 0; - n = 0; - - for ( /* void */ ; cl; cl = cl->next) { - - if (ngx_buf_special(cl->buf)) { - continue; - } - - size = cl->buf->last - cl->buf->pos; - - if (prev == cl->buf->pos) { - iov->iov_len += size; - - } else { - if (n == vec->nalloc) { - break; - } - - iov = &vec->iovs[n++]; - - iov->iov_base = (void *) cl->buf->pos; - iov->iov_len = size; - } - - prev = cl->buf->pos + size; - total += size; - } - - vec->count = n; - vec->size = total; - - return cl; -} - - -static ssize_t -ngx_writev_file(ngx_file_t *file, ngx_iovec_t *vec, off_t offset) -{ - ssize_t n; - ngx_err_t err; - - ngx_log_debug3(NGX_LOG_DEBUG_CORE, file->log, 0, - "writev: %d, %uz, %O", file->fd, vec->size, offset); - -#if (NGX_HAVE_PWRITEV) - -eintr: - - n = pwritev(file->fd, vec->iovs, vec->count, offset); - - if (n == -1) { - err = ngx_errno; - - if (err == NGX_EINTR) { - ngx_log_debug0(NGX_LOG_DEBUG_CORE, file->log, err, - "pwritev() was interrupted"); - goto eintr; - } - - ngx_log_error(NGX_LOG_CRIT, file->log, err, - "pwritev() \"%s\" failed", file->name.data); - return NGX_ERROR; - } - - if ((size_t) n != vec->size) { - ngx_log_error(NGX_LOG_CRIT, file->log, 0, - "pwritev() \"%s\" has written only %z of %uz", - file->name.data, n, vec->size); - return NGX_ERROR; - } - -#else - - if (file->sys_offset != offset) { - if (lseek(file->fd, offset, SEEK_SET) == -1) { - ngx_log_error(NGX_LOG_CRIT, file->log, ngx_errno, - "lseek() \"%s\" failed", file->name.data); - return NGX_ERROR; - } - - file->sys_offset = offset; - } - -eintr: - - n = writev(file->fd, vec->iovs, vec->count); - - if (n == -1) { - err = ngx_errno; - - if (err == NGX_EINTR) { - ngx_log_debug0(NGX_LOG_DEBUG_CORE, file->log, err, - "writev() was interrupted"); - goto eintr; - } - - ngx_log_error(NGX_LOG_CRIT, file->log, err, - "writev() \"%s\" failed", file->name.data); - return NGX_ERROR; - } - - if ((size_t) n != vec->size) { - ngx_log_error(NGX_LOG_CRIT, file->log, 0, - "writev() \"%s\" has written only %z of %uz", - file->name.data, n, vec->size); - return NGX_ERROR; - } - - file->sys_offset += n; - -#endif - - file->offset += n; - - return n; -} - - -#if (NGX_THREADS) - -ssize_t -ngx_thread_write_chain_to_file(ngx_file_t *file, ngx_chain_t *cl, off_t offset, - ngx_pool_t *pool) -{ - ngx_thread_task_t *task; - ngx_thread_file_ctx_t *ctx; - - ngx_log_debug3(NGX_LOG_DEBUG_CORE, file->log, 0, - "thread write chain: %d, %p, %O", - file->fd, cl, offset); - - task = file->thread_task; - - if (task == NULL) { - task = ngx_thread_task_alloc(pool, - sizeof(ngx_thread_file_ctx_t)); - if (task == NULL) { - return NGX_ERROR; - } - - file->thread_task = task; - } - - ctx = task->ctx; - - if (task->event.complete) { - task->event.complete = 0; - - if (!ctx->write) { - ngx_log_error(NGX_LOG_ALERT, file->log, 0, - "invalid thread call, write instead of read"); - return NGX_ERROR; - } - - if (ctx->err || ctx->nbytes == 0) { - ngx_log_error(NGX_LOG_CRIT, file->log, ctx->err, - "pwritev() \"%s\" failed", file->name.data); - return NGX_ERROR; - } - - file->offset += ctx->nbytes; - return ctx->nbytes; - } - - task->handler = ngx_thread_write_chain_to_file_handler; - - ctx->write = 1; - - ctx->fd = file->fd; - ctx->chain = cl; - ctx->offset = offset; - - if (file->thread_handler(task, file) != NGX_OK) { - return NGX_ERROR; - } - - return NGX_AGAIN; -} - - -static void -ngx_thread_write_chain_to_file_handler(void *data, ngx_log_t *log) -{ - ngx_thread_file_ctx_t *ctx = data; - -#if (NGX_HAVE_PWRITEV) - - off_t offset; - ssize_t n; - ngx_err_t err; - ngx_chain_t *cl; - ngx_iovec_t vec; - struct iovec iovs[NGX_IOVS_PREALLOCATE]; - - vec.iovs = iovs; - vec.nalloc = NGX_IOVS_PREALLOCATE; - - cl = ctx->chain; - offset = ctx->offset; - - ctx->nbytes = 0; - ctx->err = 0; - - do { - /* create the iovec and coalesce the neighbouring bufs */ - cl = ngx_chain_to_iovec(&vec, cl); - -eintr: - - n = pwritev(ctx->fd, iovs, vec.count, offset); - - if (n == -1) { - err = ngx_errno; - - if (err == NGX_EINTR) { - ngx_log_debug0(NGX_LOG_DEBUG_CORE, log, err, - "pwritev() was interrupted"); - goto eintr; - } - - ctx->err = err; - return; - } - - if ((size_t) n != vec.size) { - ctx->nbytes = 0; - return; - } - - ctx->nbytes += n; - offset += n; - } while (cl); - -#else - - ctx->err = NGX_ENOSYS; - return; - -#endif -} - -#endif /* NGX_THREADS */ - - -ngx_int_t -ngx_set_file_time(u_char *name, ngx_fd_t fd, time_t s) -{ - struct timeval tv[2]; - - tv[0].tv_sec = ngx_time(); - tv[0].tv_usec = 0; - tv[1].tv_sec = s; - tv[1].tv_usec = 0; - - if (utimes((char *) name, tv) != -1) { - return NGX_OK; - } - - return NGX_ERROR; -} - - -ngx_int_t -ngx_create_file_mapping(ngx_file_mapping_t *fm) -{ - fm->fd = ngx_open_file(fm->name, NGX_FILE_RDWR, NGX_FILE_TRUNCATE, - NGX_FILE_DEFAULT_ACCESS); - if (fm->fd == NGX_INVALID_FILE) { - ngx_log_error(NGX_LOG_CRIT, fm->log, ngx_errno, - ngx_open_file_n " \"%s\" failed", fm->name); - return NGX_ERROR; - } - - if (ftruncate(fm->fd, fm->size) == -1) { - ngx_log_error(NGX_LOG_CRIT, fm->log, ngx_errno, - "ftruncate() \"%s\" failed", fm->name); - goto failed; - } - - fm->addr = mmap(NULL, fm->size, PROT_READ|PROT_WRITE, MAP_SHARED, - fm->fd, 0); - if (fm->addr != MAP_FAILED) { - return NGX_OK; - } - - ngx_log_error(NGX_LOG_CRIT, fm->log, ngx_errno, - "mmap(%uz) \"%s\" failed", fm->size, fm->name); - -failed: - - if (ngx_close_file(fm->fd) == NGX_FILE_ERROR) { - ngx_log_error(NGX_LOG_ALERT, fm->log, ngx_errno, - ngx_close_file_n " \"%s\" failed", fm->name); - } - - return NGX_ERROR; -} - - -void -ngx_close_file_mapping(ngx_file_mapping_t *fm) -{ - if (munmap(fm->addr, fm->size) == -1) { - ngx_log_error(NGX_LOG_CRIT, fm->log, ngx_errno, - "munmap(%uz) \"%s\" failed", fm->size, fm->name); - } - - if (ngx_close_file(fm->fd) == NGX_FILE_ERROR) { - ngx_log_error(NGX_LOG_ALERT, fm->log, ngx_errno, - ngx_close_file_n " \"%s\" failed", fm->name); - } -} - - -ngx_int_t -ngx_open_dir(ngx_str_t *name, ngx_dir_t *dir) -{ - dir->dir = opendir((const char *) name->data); - - if (dir->dir == NULL) { - return NGX_ERROR; - } - - dir->valid_info = 0; - - return NGX_OK; -} - - -ngx_int_t -ngx_read_dir(ngx_dir_t *dir) -{ - dir->de = readdir(dir->dir); - - if (dir->de) { -#if (NGX_HAVE_D_TYPE) - dir->type = dir->de->d_type; -#else - dir->type = 0; -#endif - return NGX_OK; - } - - return NGX_ERROR; -} - - -ngx_int_t -ngx_open_glob(ngx_glob_t *gl) -{ - int n; - - n = glob((char *) gl->pattern, 0, NULL, &gl->pglob); - - if (n == 0) { - return NGX_OK; - } - -#ifdef GLOB_NOMATCH - - if (n == GLOB_NOMATCH && gl->test) { - return NGX_OK; - } - -#endif - - return NGX_ERROR; -} - - -ngx_int_t -ngx_read_glob(ngx_glob_t *gl, ngx_str_t *name) -{ - size_t count; - -#ifdef GLOB_NOMATCH - count = (size_t) gl->pglob.gl_pathc; -#else - count = (size_t) gl->pglob.gl_matchc; -#endif - - if (gl->n < count) { - - name->len = (size_t) ngx_strlen(gl->pglob.gl_pathv[gl->n]); - name->data = (u_char *) gl->pglob.gl_pathv[gl->n]; - gl->n++; - - return NGX_OK; - } - - return NGX_DONE; -} - - -void -ngx_close_glob(ngx_glob_t *gl) -{ - globfree(&gl->pglob); -} - - -ngx_err_t -ngx_trylock_fd(ngx_fd_t fd) -{ - struct flock fl; - - ngx_memzero(&fl, sizeof(struct flock)); - fl.l_type = F_WRLCK; - fl.l_whence = SEEK_SET; - - if (fcntl(fd, F_SETLK, &fl) == -1) { - return ngx_errno; - } - - return 0; -} - - -ngx_err_t -ngx_lock_fd(ngx_fd_t fd) -{ - struct flock fl; - - ngx_memzero(&fl, sizeof(struct flock)); - fl.l_type = F_WRLCK; - fl.l_whence = SEEK_SET; - - if (fcntl(fd, F_SETLKW, &fl) == -1) { - return ngx_errno; - } - - return 0; -} - - -ngx_err_t -ngx_unlock_fd(ngx_fd_t fd) -{ - struct flock fl; - - ngx_memzero(&fl, sizeof(struct flock)); - fl.l_type = F_UNLCK; - fl.l_whence = SEEK_SET; - - if (fcntl(fd, F_SETLK, &fl) == -1) { - return ngx_errno; - } - - return 0; -} - - -#if (NGX_HAVE_POSIX_FADVISE) && !(NGX_HAVE_F_READAHEAD) - -ngx_int_t -ngx_read_ahead(ngx_fd_t fd, size_t n) -{ - int err; - - err = posix_fadvise(fd, 0, 0, POSIX_FADV_SEQUENTIAL); - - if (err == 0) { - return 0; - } - - ngx_set_errno(err); - return NGX_FILE_ERROR; -} - -#endif - - -#if (NGX_HAVE_O_DIRECT) - -ngx_int_t -ngx_directio_on(ngx_fd_t fd) -{ - int flags; - - flags = fcntl(fd, F_GETFL); - - if (flags == -1) { - return NGX_FILE_ERROR; - } - - return fcntl(fd, F_SETFL, flags | O_DIRECT); -} - - -ngx_int_t -ngx_directio_off(ngx_fd_t fd) -{ - int flags; - - flags = fcntl(fd, F_GETFL); - - if (flags == -1) { - return NGX_FILE_ERROR; - } - - return fcntl(fd, F_SETFL, flags & ~O_DIRECT); -} - -#endif - - -#if (NGX_HAVE_STATFS) - -size_t -ngx_fs_bsize(u_char *name) -{ - struct statfs fs; - - if (statfs((char *) name, &fs) == -1) { - return 512; - } - - if ((fs.f_bsize % 512) != 0) { - return 512; - } - - return (size_t) fs.f_bsize; -} - -#elif (NGX_HAVE_STATVFS) - -size_t -ngx_fs_bsize(u_char *name) -{ - struct statvfs fs; - - if (statvfs((char *) name, &fs) == -1) { - return 512; - } - - if ((fs.f_frsize % 512) != 0) { - return 512; - } - - return (size_t) fs.f_frsize; -} - -#else - -size_t -ngx_fs_bsize(u_char *name) -{ - return 512; -} - -#endif |