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uti: Report error of offloading ioctl if any

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Change-Id: If4218b9fb89f34728c4aaf81bccab2dfbb0d4a87
This commit is contained in:
Masamichi Takagi
2019-02-07 17:33:47 +09:00
committed by Dominique Martinet
parent 66bc44f88a
commit cd42d186b7
1 changed files with 7 additions and 3 deletions
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10
executer/user/syscall_intercept.c
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@@ -25,6 +25,7 @@ hook(long syscall_number,
struct terminate_thread_desc term_desc; struct terminate_thread_desc term_desc;
unsigned long code; unsigned long code;
int stack_top; int stack_top;
long ret;
if (!uti_desc.start_syscall_intercept) { if (!uti_desc.start_syscall_intercept) {
return 1; /* System call isn't taken over */ return 1; /* System call isn't taken over */
@@ -78,9 +79,12 @@ hook(long syscall_number,
uti_desc.syscall_stack[stack_top].uti_clv = uti_desc.uti_clv; uti_desc.syscall_stack[stack_top].uti_clv = uti_desc.uti_clv;
uti_desc.syscall_stack[stack_top].ret = -EINVAL; uti_desc.syscall_stack[stack_top].ret = -EINVAL;
uti_syscall3(__NR_ioctl, uti_desc.fd, MCEXEC_UP_SYSCALL_THREAD, (long)(uti_desc.syscall_stack + stack_top)); ret = uti_syscall3(__NR_ioctl, uti_desc.fd,
*result = uti_desc.syscall_stack[stack_top].ret; MCEXEC_UP_SYSCALL_THREAD,
(long)(uti_desc.syscall_stack + stack_top));
*result = (ret < 0) ?
ret : uti_desc.syscall_stack[stack_top].ret;
/* push syscall_struct list */ /* push syscall_struct list */
__sync_fetch_and_add(&uti_desc.syscall_stack_top, 1); __sync_fetch_and_add(&uti_desc.syscall_stack_top, 1);