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Fixed allocation bug in database prog. Some format fixes.

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Jeremy.
(This used to be commit 9ff6b0c20c)
This commit is contained in:
Jeremy Allison 2001-11-12 01:00:54 +00:00
parent 8424424471
commit 22afba62c9
4 changed files with 1037 additions and 1049 deletions
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3
source3/include/local.h
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@ -189,4 +189,7 @@
/* the maximum age in seconds of a password. Should be a lp_ parameter */
#define MAX_PASSWORD_AGE (21*24*60*60)
/* Allocation roundup. */
#define SMB_ROUNDUP_ALLOCATION_SIZE 0x100000
#endif

1
source3/include/smb_macros.h
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@ -159,6 +159,7 @@
#define UNIXERROR(defclass,deferror) unix_error_packet(outbuf,defclass,deferror,__LINE__,__FILE__)
#define SMB_ROUNDUP(x,g) (((x)+((g)-1))&~((g)-1))
#define SMB_ROUNDUP_ALLOCATION(s) (SMB_ROUNDUP((SMB_OFF_T)((s)+1), ((SMB_OFF_T)SMB_ROUNDUP_ALLOCATION_SIZE)))
/* Extra macros added by Ying Chen at IBM - speed increase by inlining. */
#define smb_buf(buf) (buf + smb_size + CVAL(buf,smb_wct)*2)

2011
source3/smbd/trans2.c
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File diff suppressed because it is too large Load Diff

71
source3/smbd/vfs.c
View File

@ -280,19 +280,20 @@ ssize_t vfs_read_data(files_struct *fsp, char *buf, size_t byte_count)
ssize_t vfs_write_data(files_struct *fsp,const char *buffer,size_t N)
{
size_t total=0;
ssize_t ret;
size_t total=0;
ssize_t ret;
while (total < N)
{
ret = fsp->conn->vfs_ops.write(fsp,fsp->fd,buffer + total,N - total);
while (total < N) {
ret = fsp->conn->vfs_ops.write(fsp,fsp->fd,buffer + total,N - total);
if (ret == -1) return -1;
if (ret == 0) return total;
if (ret == -1)
return -1;
if (ret == 0)
return total;
total += ret;
}
return (ssize_t)total;
total += ret;
}
return (ssize_t)total;
}
/****************************************************************************
@ -305,11 +306,16 @@ int vfs_allocate_file_space(files_struct *fsp, SMB_OFF_T len)
{
int ret;
SMB_STRUCT_STAT st;
struct vfs_ops *vfs_ops = &fsp->conn->vfs_ops;
connection_struct *conn = fsp->conn;
struct vfs_ops *vfs_ops = &conn->vfs_ops;
SMB_OFF_T space_avail;
SMB_BIG_UINT bsize,dfree,dsize;
#if 0
if (!lp_strict_allocate(SNUM(fsp->conn)))
return vfs_set_filelen(fsp, len);
#endif
release_level_2_oplocks_on_change(fsp);
/*
@ -337,41 +343,20 @@ int vfs_allocate_file_space(files_struct *fsp, SMB_OFF_T len)
return ret;
}
/* Grow - we need to write out the space.... */
{
static unsigned char zero_space[65536];
/* Grow - we need to test if we have enough space. */
SMB_OFF_T start_pos = st.st_size;
SMB_OFF_T len_to_write = len - st.st_size;
SMB_OFF_T retlen;
len -= st.st_size;
len /= 1024; /* Len is now number of 1k blocks needed. */
space_avail = (SMB_OFF_T)conn->vfs_ops.disk_free(conn,fsp->fsp_name,False,&bsize,&dfree,&dsize);
DEBUG(10,("vfs_allocate_file_space: file %s, grow. Current size %.0f\n",
fsp->fsp_name, (double)st.st_size ));
DEBUG(10,("vfs_allocate_file_space: file %s, grow. Current size %.0f, needed blocks = %lu, space avail = %lu\n",
fsp->fsp_name, (double)st.st_size, (unsigned long)len, (unsigned long)space_avail ));
if ((retlen = vfs_ops->lseek(fsp, fsp->fd, start_pos, SEEK_SET)) != start_pos)
return -1;
while ( len_to_write > 0) {
SMB_OFF_T current_len_to_write = MIN(sizeof(zero_space),len_to_write);
retlen = vfs_ops->write(fsp,fsp->fd,(const char *)zero_space,current_len_to_write);
if (retlen <= 0) {
/* Write fail - return to original size. */
int save_errno = errno;
fsp->conn->vfs_ops.ftruncate(fsp, fsp->fd, st.st_size);
errno = save_errno;
DEBUG(10,("vfs_allocate_file_space: file %s, grow. write fail %s\n",
fsp->fsp_name, strerror(errno) ));
return -1;
}
DEBUG(10,("vfs_allocate_file_space: file %s, grow. wrote %.0f\n",
fsp->fsp_name, (double)retlen ));
len_to_write -= retlen;
}
set_filelen_write_cache(fsp, len);
if (len > space_avail) {
errno = ENOSPC;
return -1;
}
return 0;
}