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- minor optimization in syscall.c

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This commit is contained in:
Marian Ohligs 2011-08-02 12:41:26 +02:00
parent 9c7b565344
commit d03afaf36f
1 changed files with 8 additions and 23 deletions
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31
kernel/syscall.c
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@ -26,13 +26,6 @@
#include <metalsvm/spinlock.h>
#include <metalsvm/time.h>
static int sys_write(int fd, const char *buf, size_t len)
{
return write_fs(&(per_core(current_task)->fildes_table[fd]),
(uint8_t*)buf, len);
}
static int sys_open(const char* name, int flags, int mode)
{
int fd, check;
@ -41,24 +34,20 @@ static int sys_open(const char* name, int flags, int mode)
for (fd = 3; fd < NR_OPEN; fd++) {
if (per_core(current_task)->fildes_table[fd].node == NULL) {
file = &(per_core(current_task)->fildes_table[fd]);
file->offset = 0;
file->mode = mode;
file->flags = flags;
check = open_fs(file, (char*) name);
if (check == -EINVAL) {
if (check < 0) {
/* file doesn't exist! */
file->node = NULL;
file->offset = 0;
file->mode = 0;
file->flags = 0;
kprintf("Operation not permitted");
return -EINVAL;
return check;
}
break;
}
}
if (fd >= NR_OPEN) {
kprintf("Unable to create filedescriptor");
return -EINVAL;
return -EMFILE;
}
return fd;
@ -75,12 +64,6 @@ static int sys_close(int fd)
return 0;
}
static int sys_read(int fd, const char *buf, size_t len)
{
return read_fs(&(per_core(current_task)->fildes_table[fd]),
(uint8_t*)buf, len);
}
static int sys_lseek(int fd, off_t pos, int origin)
{
@ -160,7 +143,8 @@ int syscall_handler(uint32_t sys_nr, ...)
int fd = va_arg(vl, int);
const char* buf = va_arg(vl, const char*);
size_t len = va_arg(vl, size_t);
ret = sys_write(fd, buf, len);
ret = write_fs(&(per_core(current_task)->fildes_table[fd]),
(uint8_t*)buf, len);
break;
}
case __NR_open: {
@ -179,7 +163,8 @@ int syscall_handler(uint32_t sys_nr, ...)
int fd = va_arg(vl, int);
const char* buf = va_arg(vl, const char*);
size_t len = va_arg(vl, size_t);
ret = sys_read(fd, buf, len);
ret = read_fs(&(per_core(current_task)->fildes_table[fd]),
(uint8_t*)buf, len);
break;
}
case __NR_lseek: {