diff options
Diffstat (limited to 'source3')
| -rw-r--r-- | source3/Makefile.in | 2 | ||||
| -rw-r--r-- | source3/include/smbprofile.h | 3 | ||||
| -rw-r--r-- | source3/lib/sendfile.c | 158 | ||||
| -rw-r--r-- | source3/smbd/reply.c | 103 | ||||
| -rw-r--r-- | source3/smbd/vfs-wrap.c | 12 |
5 files changed, 261 insertions, 17 deletions
diff --git a/source3/Makefile.in b/source3/Makefile.in index 0a28937fc9..87ee4ef540 100644 --- a/source3/Makefile.in +++ b/source3/Makefile.in @@ -126,7 +126,7 @@ TDB_OBJ = $(TDBBASE_OBJ) tdb/tdbutil.o LIB_OBJ = lib/charcnv.o lib/debug.o lib/fault.o \ lib/getsmbpass.o lib/interface.o lib/md4.o \ lib/interfaces.o lib/pidfile.o lib/replace.o \ - lib/signal.o lib/system.o lib/time.o \ + lib/signal.o lib/system.o lib/sendfile.o lib/time.o \ lib/ufc.o lib/genrand.o lib/username.o \ lib/util_getent.o lib/util_pw.o lib/access.o lib/smbrun.o \ lib/bitmap.o lib/crc32.o lib/snprintf.o lib/dprintf.o \ diff --git a/source3/include/smbprofile.h b/source3/include/smbprofile.h index 82017cee85..870fef71e3 100644 --- a/source3/include/smbprofile.h +++ b/source3/include/smbprofile.h @@ -65,6 +65,9 @@ struct profile_stats { unsigned syscall_write_bytes; /* bytes written with write syscall */ unsigned syscall_lseek_count; unsigned syscall_lseek_time; + unsigned syscall_sendfile_count; + unsigned syscall_sendfile_time; + unsigned syscall_sendfile_bytes; /* bytes read with sendfile syscall */ unsigned syscall_rename_count; unsigned syscall_rename_time; unsigned syscall_fsync_count; diff --git a/source3/lib/sendfile.c b/source3/lib/sendfile.c new file mode 100644 index 0000000000..33282e704a --- /dev/null +++ b/source3/lib/sendfile.c @@ -0,0 +1,158 @@ +/* + Unix SMB/Netbios implementation. + Version 2.2.x / 3.0.x + sendfile implementations. + Copyright (C) Jeremy Allison 2002. + + This program is free software; you can redistribute it and/or modify + it under the terms of the GNU General Public License as published by + the Free Software Foundation; either version 2 of the License, or + (at your option) any later version. + This program is distributed in the hope that it will be useful, + but WITHOUT ANY WARRANTY; without even the implied warranty of + MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + GNU General Public License for more details. + + You should have received a copy of the GNU General Public License + along with this program; if not, write to the Free Software + Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. +*/ + +/* + * This file handles the OS dependent sendfile implementations. + * The API is such that it returns -1 on error, else returns the + * number of bytes written. + */ + +#include "includes.h" + +#if defined(LINUX_SENDFILE_API) + +#include <sys/sendfile.h> + +#ifndef MSG_MORE +#define MSG_MORE 0x8000 +#endif + +ssize_t sys_sendfile(int outfd, int infd, const DATA_BLOB *header, SMB_OFF_T offset, size_t count) +{ + size_t total=0; + ssize_t ret; + + /* + * Send the header first. + * Use MSG_MORE to cork the TCP output until sendfile is called. + */ + + while (total < header->length) { + ret = sys_send(outfd, header->data + total,header->length - total, MSG_MORE); + if (ret == -1) + return -1; + total += ret; + } + + total = count; + while (total) { + ssize_t nwritten; + do { +#if defined(HAVE_EXPLICIT_LARGEFILE_SUPPORT) && defined(HAVE_OFF64_T) && defined(SENDFILE64) + nwritten = sendfile64(outfd, infd, &offset, total); +#else + nwritten = sendfile(outfd, infd, &offset, total); +#endif + } while (nwritten == -1 && errno == EINTR); + if (nwritten == -1) + return -1; + if (nwritten == 0) + return -1; /* I think we're at EOF here... */ + total -= nwritten; + } + return count + header->length; +} + +#elif defined(SOLARIS_SENDFILE_API) + +ssize_t sys_sendfile(int outfd, int infd, const DATA_BLOB *header, SMB_OFF_T offset, size_t count) +{ +} + +#elif defined(HPUX_SENDFILE_API) + +#include <sys/socket.h> +#include <sys/uio.h> + +ssize_t sys_sendfile(int outfd, int infd, const DATA_BLOB *header, SMB_OFF_T offset, size_t count) +{ + size_t total=0; + struct iovec hdtrl[2]; + + /* Set up the header/trailer iovec. */ + hdtrl[0].iov_base = header->data; + hdtrl[0].iov_len = header->length; + hdtrl[1].iov_base = NULL; + hdtrl[1].iov_base = 0; + + total = count; + while (total) { + ssize_t nwritten; + do { +#if defined(HAVE_EXPLICIT_LARGEFILE_SUPPORT) && defined(HAVE_OFF64_T) && defined(SENDFILE64) + nwritten = sendfile64(outfd, infd, &offset, total, &hdtrl, 0); +#else + nwritten = sendfile(outfd, infd, &offset, total, &hdtrl, 0); +#endif + } while (nwritten == -1 && errno == EINTR); + if (nwritten == -1) + return -1; + total -= nwritten; + } + return count + header->length; +} + +#elif defined(FREEBSD_SENDFILE_API) + +#include <sys/types.h> +#include <sys/socket.h> +#include <sys/uio.h> + +ssize_t sys_sendfile(int outfd, int infd, const DATA_BLOB *header, SMB_OFF_T offset, size_t count) +{ + size_t total=0; + struct sf_hdtr hdr; + struct iovec hdtrl; + + hdr->headers = &hdtrl; + hdr->hdr_cnt = 1; + hdr->trailers = NULL; + hdr->trl_cnt = 0; + + /* Set up the header iovec. */ + hdtrl.iov_base = header->data; + hdtrl.iov_len = header->length; + + total = count; + while (total) { + ssize_t nwritten; + do { +#if defined(HAVE_EXPLICIT_LARGEFILE_SUPPORT) && defined(HAVE_OFF64_T) && defined(SENDFILE64) + nwritten = sendfile64(outfd, infd, &offset, total, &hdr, NULL, 0); +#else + nwritten = sendfile(outfd, infd, &offset, total, &hdr, NULL, 0); +#endif + } while (nwritten == -1 && errno == EINTR); + if (nwritten == -1) + return -1; + total -= nwritten; + } + return count + header->length; +} + +#else /* No sendfile implementation. Return error. */ + +ssize_t sys_sendfile(int outfd, int infd, const DATA_BLOB *header, SMB_OFF_T offset, size_t count) +{ + /* No sendfile syscall. */ + errno = ENOSYS; + return -1; +} +#endif diff --git a/source3/smbd/reply.c b/source3/smbd/reply.c index c3a4c5a860..02aa53807c 100644 --- a/source3/smbd/reply.c +++ b/source3/smbd/reply.c @@ -1683,6 +1683,85 @@ int reply_read(connection_struct *conn, char *inbuf,char *outbuf, int size, int } /**************************************************************************** + Reply to a read and X - possibly using sendfile. +****************************************************************************/ + +int send_file_readX(connection_struct *conn, char *inbuf,char *outbuf,int length, + files_struct *fsp, SMB_OFF_T startpos, size_t smb_maxcnt) +{ + ssize_t nread = -1; + char *data = smb_buf(outbuf); + +#if defined(WITH_SENDFILE) && defined(HAVE_SENDFILE) + /* + * We can only use sendfile on a non-chained packet and on a file + * that is exclusively oplocked. + */ + + if ((CVAL(inbuf,smb_vwv0) == 0xFF) && EXCLUSIVE_OPLOCK_TYPE(fsp->oplock_type)) { + SMB_STRUCT_STAT sbuf; + DATA_BLOB header; + + if(vfs_fstat(fsp,fsp->fd, &sbuf) == -1) + return(UNIXERROR(ERRDOS,ERRnoaccess)); + + if (startpos > sbuf.st_size) + goto normal_read; + + if (smb_maxcnt > (sbuf.st_size - startpos)) + smb_maxcnt = (sbuf.st_size - startpos); + + if (smb_maxcnt == 0) + goto normal_read; + + /* + * Set up the packet header before send. We + * assume here the sendfile will work (get the + * correct amount of data). + */ + + SSVAL(outbuf,smb_vwv5,smb_maxcnt); + SSVAL(outbuf,smb_vwv6,smb_offset(data,outbuf)); + SSVAL(smb_buf(outbuf),-2,smb_maxcnt); + CVAL(outbuf,smb_vwv0) = 0xFF; + set_message(outbuf,12,smb_maxcnt,False); + header.data = outbuf; + header.length = data - outbuf; + header.free = NULL; + + if ( conn->vfs_ops.sendfile( smbd_server_fd(), fsp, fsp->fd, &header, startpos, smb_maxcnt) == -1) { + DEBUG(0,("send_file_readX: sendfile failed for file %s (%s). Terminating\n", + fsp->fsp_name, strerror(errno) )); + exit_server("send_file_readX sendfile failed"); + } + + DEBUG( 3, ( "send_file_readX: sendfile fnum=%d max=%d nread=%d\n", + fsp->fnum, (int)smb_maxcnt, (int)nread ) ); + return -1; + } + + normal_read: + +#endif + + nread = read_file(fsp,data,startpos,smb_maxcnt); + + if (nread < 0) { + END_PROFILE(SMBreadX); + return(UNIXERROR(ERRDOS,ERRnoaccess)); + } + + SSVAL(outbuf,smb_vwv5,nread); + SSVAL(outbuf,smb_vwv6,smb_offset(data,outbuf)); + SSVAL(smb_buf(outbuf),-2,nread); + + DEBUG( 3, ( "send_file_readX fnum=%d max=%d nread=%d\n", + fsp->fnum, (int)smb_maxcnt, (int)nread ) ); + + return nread; +} + +/**************************************************************************** Reply to a read and X. ****************************************************************************/ @@ -1690,10 +1769,12 @@ int reply_read_and_X(connection_struct *conn, char *inbuf,char *outbuf,int lengt { files_struct *fsp = file_fsp(inbuf,smb_vwv2); SMB_OFF_T startpos = IVAL(inbuf,smb_vwv3); + ssize_t nread = -1; size_t smb_maxcnt = SVAL(inbuf,smb_vwv5); +#if 0 size_t smb_mincnt = SVAL(inbuf,smb_vwv6); - ssize_t nread = -1; - char *data; +#endif + START_PROFILE(SMBreadX); /* If it's an IPC, pass off the pipe handler. */ @@ -1706,7 +1787,6 @@ int reply_read_and_X(connection_struct *conn, char *inbuf,char *outbuf,int lengt CHECK_READ(fsp); set_message(outbuf,12,0,True); - data = smb_buf(outbuf); if(CVAL(inbuf,smb_wct) == 12) { #ifdef LARGE_SMB_OFF_T @@ -1736,22 +1816,13 @@ int reply_read_and_X(connection_struct *conn, char *inbuf,char *outbuf,int lengt END_PROFILE(SMBreadX); return ERROR_DOS(ERRDOS,ERRlock); } - nread = read_file(fsp,data,startpos,smb_maxcnt); - if (nread < 0) { - END_PROFILE(SMBreadX); - return(UNIXERROR(ERRDOS,ERRnoaccess)); - } - - SSVAL(outbuf,smb_vwv5,nread); - SSVAL(outbuf,smb_vwv6,smb_offset(data,outbuf)); - SSVAL(smb_buf(outbuf),-2,nread); - - DEBUG( 3, ( "readX fnum=%d min=%d max=%d nread=%d\n", - fsp->fnum, (int)smb_mincnt, (int)smb_maxcnt, (int)nread ) ); + nread = send_file_readX(conn, inbuf, outbuf, length, fsp, startpos, smb_maxcnt); + if (nread != -1) + nread = chain_reply(inbuf,outbuf,length,bufsize); END_PROFILE(SMBreadX); - return chain_reply(inbuf,outbuf,length,bufsize); + return nread; } /**************************************************************************** diff --git a/source3/smbd/vfs-wrap.c b/source3/smbd/vfs-wrap.c index 6878a42b48..b44b778e09 100644 --- a/source3/smbd/vfs-wrap.c +++ b/source3/smbd/vfs-wrap.c @@ -192,6 +192,18 @@ SMB_OFF_T vfswrap_lseek(files_struct *fsp, int filedes, SMB_OFF_T offset, int wh return result; } +#if 0 /* JRATEST */ +ssize_t vfswrap_sendfile(int outfd, struct files_struct *fsp, int infd, DATA_BLOB *hdr, SMB_OFF_T offset, size_t n) +{ + ssize_t result; + + START_PROFILE_BYTES(syscall_sendfile, n); + result = sys_sendfile(outfd, fsp, infd, hdr, offset, n); + END_PROFILE(syscall_sendfile); + return result; +} +#endif + int vfswrap_rename(connection_struct *conn, const char *old, const char *new) { int result; |