Mercurial > hg > nginx-quic
view src/os/unix/ngx_files.c @ 73:4534060fde92
nginx-0.0.1-2003-04-10-19:08:54 import
author | Igor Sysoev <igor@sysoev.ru> |
---|---|
date | Thu, 10 Apr 2003 15:08:54 +0000 |
parents | 79c1fce18e71 |
children | 17ab1af8c3dd |
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#include <ngx_config.h> #include <ngx_core.h> #include <ngx_file.h> ssize_t ngx_read_file(ngx_file_t *file, char *buf, size_t size, off_t offset) { ssize_t n; ngx_log_debug(file->log, "read: %x, %d, %qd" _ buf _ size _ offset); n = pread(file->fd, buf, size, offset); if (n == -1) { ngx_log_error(NGX_LOG_ERR, file->log, ngx_errno, "pread() failed"); return NGX_ERROR; } file->offset += n; return n; } ssize_t ngx_write_file(ngx_file_t *file, char *buf, size_t size, off_t offset) { ssize_t n; n = pwrite(file->fd, buf, size, offset); if (n == -1) { ngx_log_error(NGX_LOG_ERR, file->log, ngx_errno, "pwrite() failed"); return NGX_ERROR; } if (n != size) { ngx_log_error(NGX_LOG_ERR, file->log, 0, "pwrite() has written only %d of %d", n, size); return NGX_ERROR; } file->offset += n; return n; } #if 0 ssize_t ngx_read_file(ngx_file_t *file, char *buf, size_t size, off_t offset) { if (!file->read->ready) { ngx_memzero(&file->iocb, sizeof(iocb)); file->iocb.aio_fildes = file->fd; file->iocb.aio_buf = buf; file->iocb.aio_nbytes = size; file->iocb.aio_offset = offset; #if (USE_AIO_KQUEUE) file->iocb.aio_sigevent.sigev_notify = SIGEV_KEVENT; file->iocb.aio_sigevent.sigev_notify_kqueue = tid->kq; file->iocb.aio_sigevent.sigev_value = (union sigval) file; #endif #if (USE_AIO_SIGNAL) file->iocb.aio_sigevent.sigev_notify = SIGEV_SIGNAL; file->iocb.aio_sigevent.sigev_signo = NGX_SIGAIO; #ifndef __FreeBSD__ file->iocb.aio_sigevent.sigev_value.sival_ptr = file; #endif #endif if (aio_read(&file->iocb) == -1) { ngx_log_error(NGX_LOG_ERR, file->log, ngx_errno, "aio_read() failed"); return NGX_ERROR; n = aio_error(&file->iocb); if (n == EINPROGRESS) return NGX_AGAIN; if (n == -1) { ngx_log_error(NGX_LOG_ERR, file->log, ngx_errno, "aio_read() failed"); return NGX_ERROR; } } ngx_assert(file->iocb.aio_buf == buf), return NGX_ERROR, "ngx_aio_read_file: another buffer is passed"); n = aio_return(&file->iocb); if (n == -1) { ngx_log_error(NGX_LOG_ERR, file->log, ngx_errno, "aio_read() failed"); return NGX_ERROR; } return n; } #endif