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samba-mirror/source3/smbd/fileio.c

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now that we have no global arrays we can start to split up the monster server.c without breaking things. this splits off netprot.c and fileio.c for negprot and read/write/seek handling respectively. (This used to be commit b3d7014643ec9f2eef6e6f598f5b9db1fe2f930d)
1998-08-17 07:15:54 +00:00
/*
Unix SMB/Netbios implementation.
Version 1.9.
read/write to a files_struct
Copyright (C) Andrew Tridgell 1992-1998
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.
*/
#include "includes.h"
extern int DEBUGLEVEL;
/****************************************************************************
seek a file. Try to avoid the seek if possible
****************************************************************************/
Added ssize_t to configure code. Got 'religion' about using size_t and ssize_t for read/write stuff as part of the code to expose 64 bits to the client. This checkin does all the 'easy' stuff - such as all the read/write/lock calls - but now comes the harder parts (open & friends) and all the file enquiry functions..... Jeremy. (This used to be commit 36544fe5476f7770bd5748574fc54be7b3ee4d4a)
1998-09-11 01:24:30 +00:00
Ok - this is the 64 bit widening check in. It changes the configure to check for stat64 and friends, and then changes much of Samba to use the data type SMB_OFF_T for file size information. stat/fstat/lstat/lseek/ftruncate have now become sys_stat etc. to hide the 64 bit calls if needed. Note that this still does not expose 64 bit functionality to the client, as the changes to the reply_xxx smb's are not yet done. This code change should make these changes possible. Still to do before full 64 bit-ness to the client: fcntl lock code. statfs code widening of dev_t and ino_t (now possible due to SMB_DEV_T and SMB_OFF_T types being in place). Let me know if wierd things happen after this check-in and I'll fix them :-). Jeremy. (This used to be commit 14500936c321d15995c963766aac67bf1f4e3824)
1998-09-03 18:40:31 +00:00
SMB_OFF_T seek_file(files_struct *fsp,SMB_OFF_T pos)
now that we have no global arrays we can start to split up the monster server.c without breaking things. this splits off netprot.c and fileio.c for negprot and read/write/seek handling respectively. (This used to be commit b3d7014643ec9f2eef6e6f598f5b9db1fe2f930d)
1998-08-17 07:15:54 +00:00
{
Ok - this is the 64 bit widening check in. It changes the configure to check for stat64 and friends, and then changes much of Samba to use the data type SMB_OFF_T for file size information. stat/fstat/lstat/lseek/ftruncate have now become sys_stat etc. to hide the 64 bit calls if needed. Note that this still does not expose 64 bit functionality to the client, as the changes to the reply_xxx smb's are not yet done. This code change should make these changes possible. Still to do before full 64 bit-ness to the client: fcntl lock code. statfs code widening of dev_t and ino_t (now possible due to SMB_DEV_T and SMB_OFF_T types being in place). Let me know if wierd things happen after this check-in and I'll fix them :-). Jeremy. (This used to be commit 14500936c321d15995c963766aac67bf1f4e3824)
1998-09-03 18:40:31 +00:00
SMB_OFF_T offset = 0;
Fixed sys_lseek and seek_file calls so all returns are *checked* :-). Jeremy. (This used to be commit b8b781191dd7d28944d87eec5fa0fbef798e289b)
1998-10-18 22:06:35 +00:00
SMB_OFF_T seek_ret;
now that we have no global arrays we can start to split up the monster server.c without breaking things. this splits off netprot.c and fileio.c for negprot and read/write/seek handling respectively. (This used to be commit b3d7014643ec9f2eef6e6f598f5b9db1fe2f930d)
1998-08-17 07:15:54 +00:00
if (fsp->print_file && lp_postscript(fsp->conn->service))
offset = 3;
Use VFS operations for file I/O. Modified args to read_predict to pass in fsp. Renamed sync_file() function to sys_sync_file(). (This used to be commit 7ced7fd3958c76303e4b6019b5d54eda666d7b33)
1999-04-04 07:05:03 +00:00
seek_ret = fsp->conn->vfs_ops.lseek(fsp->fd_ptr->fd,pos+offset,SEEK_SET);
Fixed sys_lseek and seek_file calls so all returns are *checked* :-). Jeremy. (This used to be commit b8b781191dd7d28944d87eec5fa0fbef798e289b)
1998-10-18 22:06:35 +00:00
if((seek_ret == -1) || (seek_ret != pos+offset)) {
DEBUG(0,("seek_file: sys_lseek failed. Error was %s\n", strerror(errno) ));
fsp->pos = -1;
return -1;
}
fsp->pos = seek_ret - offset;
Ok so with this bugfix 64 bit file access actually seems to work :-). Problems were just dumb bugs like (defining sys_lseek to return 'int' DOH !). Jeremy. (This used to be commit 54dd51176fbab18af0b21bdee71b53f8f86573a8)
1998-09-11 21:42:18 +00:00
DEBUG(10,("seek_file: requested pos = %.0f, new pos = %.0f\n",
(double)(pos+offset), (double)fsp->pos ));
now that we have no global arrays we can start to split up the monster server.c without breaking things. this splits off netprot.c and fileio.c for negprot and read/write/seek handling respectively. (This used to be commit b3d7014643ec9f2eef6e6f598f5b9db1fe2f930d)
1998-08-17 07:15:54 +00:00
return(fsp->pos);
}
/****************************************************************************
read from a file
****************************************************************************/
Added ssize_t to configure code. Got 'religion' about using size_t and ssize_t for read/write stuff as part of the code to expose 64 bits to the client. This checkin does all the 'easy' stuff - such as all the read/write/lock calls - but now comes the harder parts (open & friends) and all the file enquiry functions..... Jeremy. (This used to be commit 36544fe5476f7770bd5748574fc54be7b3ee4d4a)
1998-09-11 01:24:30 +00:00
ssize_t read_file(files_struct *fsp,char *data,SMB_OFF_T pos,size_t n)
now that we have no global arrays we can start to split up the monster server.c without breaking things. this splits off netprot.c and fileio.c for negprot and read/write/seek handling respectively. (This used to be commit b3d7014643ec9f2eef6e6f598f5b9db1fe2f930d)
1998-08-17 07:15:54 +00:00
{
Added ssize_t to configure code. Got 'religion' about using size_t and ssize_t for read/write stuff as part of the code to expose 64 bits to the client. This checkin does all the 'easy' stuff - such as all the read/write/lock calls - but now comes the harder parts (open & friends) and all the file enquiry functions..... Jeremy. (This used to be commit 36544fe5476f7770bd5748574fc54be7b3ee4d4a)
1998-09-11 01:24:30 +00:00
ssize_t ret=0,readret;
now that we have no global arrays we can start to split up the monster server.c without breaking things. this splits off netprot.c and fileio.c for negprot and read/write/seek handling respectively. (This used to be commit b3d7014643ec9f2eef6e6f598f5b9db1fe2f930d)
1998-08-17 07:15:54 +00:00
#if USE_READ_PREDICTION
Added ssize_t to configure code. Got 'religion' about using size_t and ssize_t for read/write stuff as part of the code to expose 64 bits to the client. This checkin does all the 'easy' stuff - such as all the read/write/lock calls - but now comes the harder parts (open & friends) and all the file enquiry functions..... Jeremy. (This used to be commit 36544fe5476f7770bd5748574fc54be7b3ee4d4a)
1998-09-11 01:24:30 +00:00
if (!fsp->can_write) {
Use VFS operations for file I/O. Modified args to read_predict to pass in fsp. Renamed sync_file() function to sys_sync_file(). (This used to be commit 7ced7fd3958c76303e4b6019b5d54eda666d7b33)
1999-04-04 07:05:03 +00:00
ret = read_predict(fsp, fsp->fd_ptr->fd,pos,data,NULL,n);
now that we have no global arrays we can start to split up the monster server.c without breaking things. this splits off netprot.c and fileio.c for negprot and read/write/seek handling respectively. (This used to be commit b3d7014643ec9f2eef6e6f598f5b9db1fe2f930d)
1998-08-17 07:15:54 +00:00
Added ssize_t to configure code. Got 'religion' about using size_t and ssize_t for read/write stuff as part of the code to expose 64 bits to the client. This checkin does all the 'easy' stuff - such as all the read/write/lock calls - but now comes the harder parts (open & friends) and all the file enquiry functions..... Jeremy. (This used to be commit 36544fe5476f7770bd5748574fc54be7b3ee4d4a)
1998-09-11 01:24:30 +00:00
data += ret;
n -= ret;
pos += ret;
}
now that we have no global arrays we can start to split up the monster server.c without breaking things. this splits off netprot.c and fileio.c for negprot and read/write/seek handling respectively. (This used to be commit b3d7014643ec9f2eef6e6f598f5b9db1fe2f930d)
1998-08-17 07:15:54 +00:00
#endif
#if WITH_MMAP
Added ssize_t to configure code. Got 'religion' about using size_t and ssize_t for read/write stuff as part of the code to expose 64 bits to the client. This checkin does all the 'easy' stuff - such as all the read/write/lock calls - but now comes the harder parts (open & friends) and all the file enquiry functions..... Jeremy. (This used to be commit 36544fe5476f7770bd5748574fc54be7b3ee4d4a)
1998-09-11 01:24:30 +00:00
if (fsp->mmap_ptr) {
config: Fix crypt prototype on RedHat Linux. include/includes.h: Fix crypt prototype on RedHat Linux. smbd/fileio.c: Fix mmap bug found by WinCE client. smbd/ipc.c: Fix WinCE wierdness with pipes being opened as \server\pipe\lanman smbd/password.c: Fix encrypted null passwords. Jeremy. (This used to be commit 475992730c0ecbf31c09b3518df2f0354cec61da)
1998-10-15 00:55:17 +00:00
SMB_OFF_T num = (fsp->mmap_size > pos) ? (fsp->mmap_size - pos) : 0;
gto ri of a bunch more #ifdef LARGE_SMB_OFF_T checks by introducing a SOFF_T() macro for setting an SMB_OFF_T variable also limited mmap based reads to MAX_MMAP_SIZE. We really can't mmap 2^50 bytes due to virtual address space problems. (This used to be commit 4e784b18899eddd2399a51fa7d8c219560432922)
1998-09-18 03:00:20 +00:00
num = MIN(n,num);
if (num > 0) {
memcpy(data,fsp->mmap_ptr+pos,num);
data += num;
pos += num;
n -= num;
ret += num;
}
Added ssize_t to configure code. Got 'religion' about using size_t and ssize_t for read/write stuff as part of the code to expose 64 bits to the client. This checkin does all the 'easy' stuff - such as all the read/write/lock calls - but now comes the harder parts (open & friends) and all the file enquiry functions..... Jeremy. (This used to be commit 36544fe5476f7770bd5748574fc54be7b3ee4d4a)
1998-09-11 01:24:30 +00:00
}
now that we have no global arrays we can start to split up the monster server.c without breaking things. this splits off netprot.c and fileio.c for negprot and read/write/seek handling respectively. (This used to be commit b3d7014643ec9f2eef6e6f598f5b9db1fe2f930d)
1998-08-17 07:15:54 +00:00
#endif
Fixed sys_lseek and seek_file calls so all returns are *checked* :-). Jeremy. (This used to be commit b8b781191dd7d28944d87eec5fa0fbef798e289b)
1998-10-18 22:06:35 +00:00
if (seek_file(fsp,pos) == -1) {
Ok so with this bugfix 64 bit file access actually seems to work :-). Problems were just dumb bugs like (defining sys_lseek to return 'int' DOH !). Jeremy. (This used to be commit 54dd51176fbab18af0b21bdee71b53f8f86573a8)
1998-09-11 21:42:18 +00:00
DEBUG(3,("read_file: Failed to seek to %.0f\n",(double)pos));
now that we have no global arrays we can start to split up the monster server.c without breaking things. this splits off netprot.c and fileio.c for negprot and read/write/seek handling respectively. (This used to be commit b3d7014643ec9f2eef6e6f598f5b9db1fe2f930d)
1998-08-17 07:15:54 +00:00
return(ret);
Added ssize_t to configure code. Got 'religion' about using size_t and ssize_t for read/write stuff as part of the code to expose 64 bits to the client. This checkin does all the 'easy' stuff - such as all the read/write/lock calls - but now comes the harder parts (open & friends) and all the file enquiry functions..... Jeremy. (This used to be commit 36544fe5476f7770bd5748574fc54be7b3ee4d4a)
1998-09-11 01:24:30 +00:00
}
Use VFS operations for file I/O. Modified args to read_predict to pass in fsp. Renamed sync_file() function to sys_sync_file(). (This used to be commit 7ced7fd3958c76303e4b6019b5d54eda666d7b33)
1999-04-04 07:05:03 +00:00
now that we have no global arrays we can start to split up the monster server.c without breaking things. this splits off netprot.c and fileio.c for negprot and read/write/seek handling respectively. (This used to be commit b3d7014643ec9f2eef6e6f598f5b9db1fe2f930d)
1998-08-17 07:15:54 +00:00
if (n > 0) {
Use VFS operations for file I/O. Modified args to read_predict to pass in fsp. Renamed sync_file() function to sys_sync_file(). (This used to be commit 7ced7fd3958c76303e4b6019b5d54eda666d7b33)
1999-04-04 07:05:03 +00:00
readret = fsp->conn->vfs_ops.read(fsp->fd_ptr->fd,data,n);
now that we have no global arrays we can start to split up the monster server.c without breaking things. this splits off netprot.c and fileio.c for negprot and read/write/seek handling respectively. (This used to be commit b3d7014643ec9f2eef6e6f598f5b9db1fe2f930d)
1998-08-17 07:15:54 +00:00
if (readret > 0) ret += readret;
}
return(ret);
}
/****************************************************************************
write to a file
****************************************************************************/
Added ssize_t to configure code. Got 'religion' about using size_t and ssize_t for read/write stuff as part of the code to expose 64 bits to the client. This checkin does all the 'easy' stuff - such as all the read/write/lock calls - but now comes the harder parts (open & friends) and all the file enquiry functions..... Jeremy. (This used to be commit 36544fe5476f7770bd5748574fc54be7b3ee4d4a)
1998-09-11 01:24:30 +00:00
ssize_t write_file(files_struct *fsp,char *data,size_t n)
now that we have no global arrays we can start to split up the monster server.c without breaking things. this splits off netprot.c and fileio.c for negprot and read/write/seek handling respectively. (This used to be commit b3d7014643ec9f2eef6e6f598f5b9db1fe2f930d)
1998-08-17 07:15:54 +00:00
{
if (!fsp->can_write) {
errno = EPERM;
return(0);
}
if (!fsp->modified) {
More abstraction of file system data types, to move to a 64 bit file interface for the NT SMB's. Created a new define, SMB_STRUCT_STAT that currently is defined to be struct stat - this wil change to a user defined type containing 64 bit info when the correct wrappers are written for 64 bit stat(), fstat() and lstat() calls. Also changed all sys_xxxx() calls that were previously just wrappers to the same call prefixed by a dos_to_unix() call into dos_xxxx() calls. This makes it explicit when a pathname translation is being done, and when it is not. Now, all sys_xxx() calls are meant to be wrappers to mask OS differences, and not silently converting filenames on the fly. Jeremy. (This used to be commit 28aa182dbffaa4ffd86047e608400de4b26e80eb)
1998-09-01 20:11:54 +00:00
SMB_STRUCT_STAT st;
now that we have no global arrays we can start to split up the monster server.c without breaking things. this splits off netprot.c and fileio.c for negprot and read/write/seek handling respectively. (This used to be commit b3d7014643ec9f2eef6e6f598f5b9db1fe2f930d)
1998-08-17 07:15:54 +00:00
fsp->modified = True;
Use VFS operations for file I/O. Modified args to read_predict to pass in fsp. Renamed sync_file() function to sys_sync_file(). (This used to be commit 7ced7fd3958c76303e4b6019b5d54eda666d7b33)
1999-04-04 07:05:03 +00:00
if (fsp->conn->vfs_ops.fstat(fsp->fd_ptr->fd,&st) == 0) {
now that we have no global arrays we can start to split up the monster server.c without breaking things. this splits off netprot.c and fileio.c for negprot and read/write/seek handling respectively. (This used to be commit b3d7014643ec9f2eef6e6f598f5b9db1fe2f930d)
1998-08-17 07:15:54 +00:00
int dosmode = dos_mode(fsp->conn,fsp->fsp_name,&st);
if (MAP_ARCHIVE(fsp->conn) && !IS_DOS_ARCHIVE(dosmode)) {
More abstraction of file system data types, to move to a 64 bit file interface for the NT SMB's. Created a new define, SMB_STRUCT_STAT that currently is defined to be struct stat - this wil change to a user defined type containing 64 bit info when the correct wrappers are written for 64 bit stat(), fstat() and lstat() calls. Also changed all sys_xxxx() calls that were previously just wrappers to the same call prefixed by a dos_to_unix() call into dos_xxxx() calls. This makes it explicit when a pathname translation is being done, and when it is not. Now, all sys_xxx() calls are meant to be wrappers to mask OS differences, and not silently converting filenames on the fly. Jeremy. (This used to be commit 28aa182dbffaa4ffd86047e608400de4b26e80eb)
1998-09-01 20:11:54 +00:00
file_chmod(fsp->conn,fsp->fsp_name,dosmode | aARCH,&st);
now that we have no global arrays we can start to split up the monster server.c without breaking things. this splits off netprot.c and fileio.c for negprot and read/write/seek handling respectively. (This used to be commit b3d7014643ec9f2eef6e6f598f5b9db1fe2f930d)
1998-08-17 07:15:54 +00:00
}
}
}
Use VFS operations for file I/O. Modified args to read_predict to pass in fsp. Renamed sync_file() function to sys_sync_file(). (This used to be commit 7ced7fd3958c76303e4b6019b5d54eda666d7b33)
1999-04-04 07:05:03 +00:00
return(vfs_write_data(fsp,data,n));
now that we have no global arrays we can start to split up the monster server.c without breaking things. this splits off netprot.c and fileio.c for negprot and read/write/seek handling respectively. (This used to be commit b3d7014643ec9f2eef6e6f598f5b9db1fe2f930d)
1998-08-17 07:15:54 +00:00
}
more splitting of server.c created dosmode.c and filename.c (This used to be commit 534a90ca44641417c21f6ed6d4b94b1de60f808d)
1998-08-17 07:40:06 +00:00
/*******************************************************************
sync a file
********************************************************************/
Added ssize_t to configure code. Got 'religion' about using size_t and ssize_t for read/write stuff as part of the code to expose 64 bits to the client. This checkin does all the 'easy' stuff - such as all the read/write/lock calls - but now comes the harder parts (open & friends) and all the file enquiry functions..... Jeremy. (This used to be commit 36544fe5476f7770bd5748574fc54be7b3ee4d4a)
1998-09-11 01:24:30 +00:00
Use VFS operations for file I/O. Modified args to read_predict to pass in fsp. Renamed sync_file() function to sys_sync_file(). (This used to be commit 7ced7fd3958c76303e4b6019b5d54eda666d7b33)
1999-04-04 07:05:03 +00:00
void sys_sync_file(struct connection_struct *conn, files_struct *fsp)
more splitting of server.c created dosmode.c and filename.c (This used to be commit 534a90ca44641417c21f6ed6d4b94b1de60f808d)
1998-08-17 07:40:06 +00:00
{
#ifdef HAVE_FSYNC
if(lp_strict_sync(SNUM(conn)))
fsync(fsp->fd_ptr->fd);
#endif
}
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