6bbcab3ec4
- Remove unused includes. - Add include guards to headers. - Use unsigned variables in case they're never going to hold a negative value. This causes GCC's complaints to disappear and should make flexelint a lot happier, too. - Make functions private when they're used only within a module. - Remove unused variables. - Add casts where appropriate.
111 lines
3.4 KiB
C
111 lines
3.4 KiB
C
#include "fs.h"
|
|
#include "buf.h"
|
|
#include "inode.h"
|
|
#include "super.h"
|
|
|
|
|
|
/*===========================================================================*
|
|
* no_sys *
|
|
*===========================================================================*/
|
|
PUBLIC int no_sys()
|
|
{
|
|
/* Somebody has used an illegal system call number */
|
|
printf("no_sys: invalid call %d\n", req_nr);
|
|
return(EINVAL);
|
|
}
|
|
|
|
|
|
/*===========================================================================*
|
|
* conv2 *
|
|
*===========================================================================*/
|
|
PUBLIC unsigned conv2(norm, w)
|
|
int norm; /* TRUE if no swap, FALSE for byte swap */
|
|
int w; /* promotion of 16-bit word to be swapped */
|
|
{
|
|
/* Possibly swap a 16-bit word between 8086 and 68000 byte order. */
|
|
if (norm) return( (unsigned) w & 0xFFFF);
|
|
return( ((w&BYTE) << 8) | ( (w>>8) & BYTE));
|
|
}
|
|
|
|
|
|
/*===========================================================================*
|
|
* conv4 *
|
|
*===========================================================================*/
|
|
PUBLIC long conv4(norm, x)
|
|
int norm; /* TRUE if no swap, FALSE for byte swap */
|
|
long x; /* 32-bit long to be byte swapped */
|
|
{
|
|
/* Possibly swap a 32-bit long between 8086 and 68000 byte order. */
|
|
unsigned lo, hi;
|
|
long l;
|
|
|
|
if (norm) return(x); /* byte order was already ok */
|
|
lo = conv2(FALSE, (int) x & 0xFFFF); /* low-order half, byte swapped */
|
|
hi = conv2(FALSE, (int) (x>>16) & 0xFFFF); /* high-order half, swapped */
|
|
l = ( (long) lo <<16) | hi;
|
|
return(l);
|
|
}
|
|
|
|
|
|
/*===========================================================================*
|
|
* clock_time *
|
|
*===========================================================================*/
|
|
PUBLIC time_t clock_time()
|
|
{
|
|
/* This routine returns the time in seconds since 1.1.1970. MINIX is an
|
|
* astrophysically naive system that assumes the earth rotates at a constant
|
|
* rate and that such things as leap seconds do not exist.
|
|
*/
|
|
|
|
register int k;
|
|
clock_t uptime;
|
|
time_t boottime;
|
|
|
|
if ( (k=getuptime2(&uptime, &boottime)) != OK)
|
|
panic("clock_time: getuptme2 failed: %d", k);
|
|
|
|
return( (time_t) (boottime + (uptime/sys_hz())));
|
|
}
|
|
|
|
|
|
/*===========================================================================*
|
|
* mfs_min *
|
|
*===========================================================================*/
|
|
PUBLIC int min(unsigned int l, unsigned int r)
|
|
{
|
|
if(r >= l) return(l);
|
|
|
|
return(r);
|
|
}
|
|
|
|
|
|
/*===========================================================================*
|
|
* mfs_nul *
|
|
*===========================================================================*/
|
|
PUBLIC void mfs_nul_f(char *file, int line, char *str, unsigned int len,
|
|
unsigned int maxlen)
|
|
{
|
|
if(len < maxlen && str[len-1] != '\0') {
|
|
printf("MFS %s:%d string (length %d, maxlen %d) not null-terminated\n",
|
|
file, line, len, maxlen);
|
|
}
|
|
}
|
|
|
|
#define MYASSERT(c) if(!(c)) { printf("MFS:%s:%d: sanity check: %s failed\n", \
|
|
file, line, #c); panic("sanity check " #c " failed: %d", __LINE__); }
|
|
|
|
|
|
/*===========================================================================*
|
|
* sanity_check *
|
|
*===========================================================================*/
|
|
PUBLIC void sanitycheck(char *file, int line)
|
|
{
|
|
MYASSERT(SELF_E > 0);
|
|
if(superblock.s_dev != NO_DEV) {
|
|
MYASSERT(superblock.s_dev == fs_dev);
|
|
MYASSERT(superblock.s_block_size == fs_block_size);
|
|
} else {
|
|
MYASSERT(_MIN_BLOCK_SIZE == fs_block_size);
|
|
}
|
|
}
|
|
|