Mercurial > hg > nginx-ranges
view src/os/unix/ngx_files.c @ 34:aab2ea7c0458 NGINX_0_1_17
nginx 0.1.17
*) Change: the ngx_http_rewrite_module was rewritten from the scratch.
Now it is possible to redirect, to return the error codes, to check
the variables and referrers. The directives can be used inside
locations. The redirect directive was canceled.
*) Feature: the ngx_http_geo_module.
*) Feature: the proxy_set_x_var and fastcgi_set_var directives.
*) Bugfix: the location configuration with "=" modifier may be used in
another location.
*) Bugfix: the correct content type was set only for requests that use
small caps letters in extension.
*) Bugfix: if the proxy_pass or fastcgi_pass directives were set in the
location, and access was denied, and the error was redirected to a
static page, then the segmentation fault occurred.
*) Bugfix: if in a proxied "Location" header was a relative URL, then a
host name and a slash were added to them; bug appeared in 0.1.14.
*) Bugfix: the system error message was not logged on Linux.
author | Igor Sysoev <http://sysoev.ru> |
---|---|
date | Thu, 03 Feb 2005 00:00:00 +0300 |
parents | 6f8b0dc0f8dd |
children | 72eb30262aac |
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/* * Copyright (C) Igor Sysoev */ #include <ngx_config.h> #include <ngx_core.h> 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() failed, file \"%s\"", 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() failed"); 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() failed"); return NGX_ERROR; } file->sys_offset += n; #endif file->offset += n; return n; } ssize_t ngx_write_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, "write: %d, %p, %uz, %O", file->fd, buf, size, offset); #if (NGX_HAVE_PWRITE) n = pwrite(file->fd, buf, size, offset); if (n == -1) { ngx_log_error(NGX_LOG_CRIT, file->log, ngx_errno, "pwrite() failed"); return NGX_ERROR; } if ((size_t) n != size) { ngx_log_error(NGX_LOG_CRIT, file->log, 0, "pwrite() has written only %z of %uz", n, 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() failed"); return NGX_ERROR; } file->sys_offset = offset; } n = write(file->fd, buf, size); if (n == -1) { ngx_log_error(NGX_LOG_CRIT, file->log, ngx_errno, "write() failed"); return NGX_ERROR; } if ((size_t) n != size) { ngx_log_error(NGX_LOG_CRIT, file->log, 0, "write() has written only %z of %uz", n, size); return NGX_ERROR; } file->sys_offset += n; #endif file->offset += n; return n; } ngx_fd_t ngx_open_tempfile(u_char *name, ngx_uint_t persistent) { ngx_fd_t fd; fd = open((const char *) name, O_CREAT|O_EXCL|O_RDWR, 0600); if (fd != -1 && !persistent) { unlink((const char *) name); } return fd; } #define NGX_IOVS 8 ssize_t ngx_write_chain_to_file(ngx_file_t *file, ngx_chain_t *cl, off_t offset, ngx_pool_t *pool) { u_char *prev; size_t size; ssize_t n; ngx_err_t err; ngx_array_t vec; struct iovec *iov, iovs[NGX_IOVS]; /* 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); } vec.elts = iovs; vec.size = sizeof(struct iovec); vec.nalloc = NGX_IOVS; vec.pool = pool; do { prev = NULL; iov = NULL; size = 0; vec.nelts = 0; /* create the iovec and coalesce the neighbouring bufs */ while (cl && vec.nelts < IOV_MAX) { if (prev == cl->buf->pos) { iov->iov_len += cl->buf->last - cl->buf->pos; } else { if (!(iov = ngx_array_push(&vec))) { return NGX_ERROR; } iov->iov_base = (void *) cl->buf->pos; iov->iov_len = cl->buf->last - cl->buf->pos; } size += cl->buf->last - cl->buf->pos; prev = cl->buf->last; cl = cl->next; } /* use pwrite() if there is the only iovec buffer */ if (vec.nelts == 1) { iov = vec.elts; return ngx_write_file(file, (u_char *) iov[0].iov_base, iov[0].iov_len, offset); } if (file->sys_offset != offset) { if (lseek(file->fd, offset, SEEK_SET) == -1) { ngx_log_error(NGX_LOG_CRIT, file->log, ngx_errno, "lseek() failed"); return NGX_ERROR; } file->sys_offset = offset; } n = writev(file->fd, vec.elts, vec.nelts); if (n == -1) { ngx_log_error(NGX_LOG_CRIT, file->log, ngx_errno, "writev() failed"); return NGX_ERROR; } if ((size_t) n != size) { ngx_log_error(NGX_LOG_CRIT, file->log, 0, "writev() has written only %z of %uz", n, size); return NGX_ERROR; } file->sys_offset += n; file->offset += n; } while (cl); return n; } 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; }