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better cleanup of shared memory on failure

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This commit is contained in:
asvitkine 2012-01-01 19:11:31 +00:00
parent 84a6ec3a05
commit 60779756ab
1 changed files with 19 additions and 13 deletions
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32
SheepShaver/src/Unix/main_unix.cpp
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@ -1118,9 +1118,6 @@ static void Quit(void)
if (dr_cache_area_mapped)
vm_mac_release(DR_CACHE_BASE, DR_CACHE_SIZE);
// Delete Kernel Data area
kernel_data_exit();
// Delete Low Memory area
if (lm_area_mapped)
vm_mac_release(0, 0x3000);
@ -1163,27 +1160,35 @@ static void Quit(void)
static bool kernel_data_init(void)
{
char str[256];
void *kernel_addr1 = NULL;
void *kernel_addr2 = NULL;
uint32 kernel_area_size = (KERNEL_AREA_SIZE + SHMLBA - 1) & -SHMLBA;
kernel_area = shmget(IPC_PRIVATE, kernel_area_size, 0600);
if (kernel_area == -1) {
sprintf(str, GetString(STR_KD_SHMGET_ERR), strerror(errno));
ErrorAlert(str);
return false;
goto fail_shmget;
}
void *kernel_addr = Mac2HostAddr(KERNEL_DATA_BASE & -SHMLBA);
if (shmat(kernel_area, kernel_addr, 0) != kernel_addr) {
kernel_addr1 = Mac2HostAddr(KERNEL_DATA_BASE & -SHMLBA);
if (shmat(kernel_area, kernel_addr1, 0) != kernel_addr1) {
sprintf(str, GetString(STR_KD_SHMAT_ERR), strerror(errno));
ErrorAlert(str);
return false;
goto fail_shmat1;
}
kernel_addr = Mac2HostAddr(KERNEL_DATA2_BASE & -SHMLBA);
if (shmat(kernel_area, kernel_addr, 0) != kernel_addr) {
kernel_addr2 = Mac2HostAddr(KERNEL_DATA2_BASE & -SHMLBA);
if (shmat(kernel_area, kernel_addr2, 0) != kernel_addr2) {
sprintf(str, GetString(STR_KD2_SHMAT_ERR), strerror(errno));
ErrorAlert(str);
return false;
goto fail_shmat2;
}
atexit(kernel_data_exit);
return true;
fail_shmat2:
shmdt(kernel_addr1);
fail_shmat1:
shmctl(kernel_area, IPC_RMID, NULL);
fail_shmget:
ErrorAlert(str);
return false;
}
@ -1197,6 +1202,7 @@ static void kernel_data_exit(void)
shmdt(Mac2HostAddr(KERNEL_DATA_BASE & -SHMLBA));
shmdt(Mac2HostAddr(KERNEL_DATA2_BASE & -SHMLBA));
shmctl(kernel_area, IPC_RMID, NULL);
kernel_area = NULL;
}
}