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Finished adding untested bare functionality vfs

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Finished adding untested shm syscalls.
Finished adding untested l4 send/recv helpers

Everything compiles. Now going to fix lots of bugs ;-)
This commit is contained in:
Bahadir Balban
2008-02-03 17:42:38 +00:00
parent 05e9028e90
commit cab2e8bdd3
51 changed files with 1661 additions and 227 deletions
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80
tasks/libposix/shm.c
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@@ -2,7 +2,7 @@
* This is the glue logic between posix shared memory functions
* and their L4 implementation.
*
* Copyright (C) 2007 Bahadir Balban
* Copyright (C) 2007, 2008 Bahadir Balban
*/
#include <errno.h>
#include <stdio.h>
@@ -12,80 +12,110 @@
#include <l4lib/arch/syslib.h>
#include <l4lib/ipcdefs.h>
#define PTR_ERR(x) ((void *)(x))
#define IS_ERR(x) (((int)(x)) < 0)
static inline int l4_shmget(l4id_t key, int size, int shmflg)
int l4_shmget(l4id_t key, int size, int shmflg)
{
int err;
write_mr(L4SYS_ARG0, key);
write_mr(L4SYS_ARG1, size);
write_mr(L4SYS_ARG2, shmflg);
/* Call pager with shmget() request. Check ipc error. */
if ((errno = l4_sendrecv(PAGER_TID, PAGER_TID, L4_IPC_TAG_SHMGET)) < 0) {
printf("%s: L4 IPC Error: %d.\n", __FUNCTION__, errno);
return -1;
if ((err = l4_sendrecv(PAGER_TID, PAGER_TID, L4_IPC_TAG_SHMGET)) < 0) {
printf("%s: L4 IPC Error: %d.\n", __FUNCTION__, err);
return err;
}
/* Check if syscall itself was successful */
if ((errno = l4_get_retval()) < 0) {
printf("%s: SHMGET Error: %d.\n", __FUNCTION__, errno);
return -1;
if ((err = l4_get_retval()) < 0) {
printf("%s: SHMGET Error: %d.\n", __FUNCTION__, err);
return err;
}
/* Obtain shmid. */
return read_mr(L4SYS_ARG0);
}
static inline void *l4_shmat(l4id_t shmid, const void *shmaddr, int shmflg)
void *l4_shmat(l4id_t shmid, const void *shmaddr, int shmflg)
{
int err;
write_mr(L4SYS_ARG0, shmid);
write_mr(L4SYS_ARG1, (unsigned long)shmaddr);
write_mr(L4SYS_ARG2, shmflg);
/* Call pager with shmget() request. Check ipc error. */
if ((errno = l4_sendrecv(PAGER_TID, PAGER_TID, L4_IPC_TAG_SHMAT)) < 0) {
printf("%s: L4 IPC Error: %d.\n", __FUNCTION__, errno);
return (void *)-1;
if ((err = l4_sendrecv(PAGER_TID, PAGER_TID, L4_IPC_TAG_SHMAT)) < 0) {
printf("%s: L4 IPC Error: %d.\n", __FUNCTION__, err);
return PTR_ERR(err);
}
/* Check if syscall itself was successful */
if ((errno = l4_get_retval()) < 0) {
printf("%s: SHMAT Error: %d.\n", __FUNCTION__, errno);
return (void *)-1;
if ((err = l4_get_retval()) < 0) {
printf("%s: SHMAT Error: %d.\n", __FUNCTION__, err);
return PTR_ERR(err);
}
/* Obtain shm base. */
return (void *)read_mr(L4SYS_ARG0);
}
static inline int l4_shmdt(const void *shmaddr)
int l4_shmdt(const void *shmaddr)
{
int err;
write_mr(L4SYS_ARG0, (unsigned long)shmaddr);
/* Call pager with shmget() request. Check ipc error. */
if ((errno = l4_sendrecv(PAGER_TID, PAGER_TID, L4_IPC_TAG_SHMDT)) < 0) {
printf("%s: L4 IPC Error: %d.\n", __FUNCTION__, errno);
if ((err = l4_sendrecv(PAGER_TID, PAGER_TID, L4_IPC_TAG_SHMDT)) < 0) {
printf("%s: L4 IPC Error: %d.\n", __FUNCTION__, err);
return -1;
}
/* Check if syscall itself was successful */
if ((errno = l4_get_retval()) < 0) {
printf("%s: SHMDT Error: %d.\n", __FUNCTION__, errno);
if ((err = l4_get_retval()) < 0) {
printf("%s: SHMDT Error: %d.\n", __FUNCTION__, err);
return -1;
}
return 0;
}
int shmget(key_t key, size_t size, int shmflg)
{
return l4_shmget(key, size, shmflg);
int ret = l4_shmget(key, size, shmflg);
/* If error, return positive error code */
if (ret < 0) {
errno = -ret;
return -1;
}
/* else return value */
return ret;
}
void *shmat(int shmid, const void *shmaddr, int shmflg)
{
return l4_shmat(shmid, shmaddr, shmflg);
void *ret = l4_shmat(shmid, shmaddr, shmflg);
/* If error, return positive error code */
if (IS_ERR(ret)) {
errno = -((int)ret);
return PTR_ERR(-1);
}
/* else return value */
return ret;
}
int shmdt(const void *shmaddr)
{
return l4_shmdt(shmaddr);
int ret = l4_shmdt(shmaddr);
/* If error, return positive error code */
if (ret < 0) {
errno = -ret;
return -1;
}
/* else return value */
return ret;
}