OpenE2K
/
qemu-e2k
13
4
Fork 0
Code Issues 4 Pull Requests Projects 2 Releases Activity

linux-user: fix getrusage and wait4 failures with invalid rusage struct 

Implementations of system calls getrusage and wait4 have not previously
handled correctly cases when incorrect address of struct rusage is
passed.
This change makes sure return values are correctly set for these cases.

Signed-off-by: Petar Jovanovic <petar.jovanovic@imgtec.com>
Signed-off-by: Riku Voipio <riku.voipio@linaro.org>
This commit is contained in:
Petar Jovanovic 2014-04-08 19:24:30 +02:00 committed by Riku Voipio
parent ad6919dc0a
commit a39fb273bd
1 changed files with 8 additions and 3 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

11
linux-user/syscall.c
View File

@ -6243,7 +6243,7 @@ abi_long do_syscall(void *cpu_env, int num, abi_long arg1,
struct rusage rusage;
ret = get_errno(getrusage(arg1, &rusage));
if (!is_error(ret)) {
host_to_target_rusage(arg2, &rusage);
ret = host_to_target_rusage(arg2, &rusage);
}
}
break;
@ -6908,6 +6908,7 @@ abi_long do_syscall(void *cpu_env, int num, abi_long arg1,
abi_long status_ptr = arg2;
struct rusage rusage, *rusage_ptr;
abi_ulong target_rusage = arg4;
abi_long rusage_err;
if (target_rusage)
rusage_ptr = &rusage;
else
@ -6919,8 +6920,12 @@ abi_long do_syscall(void *cpu_env, int num, abi_long arg1,
if (put_user_s32(status, status_ptr))
goto efault;
}
if (target_rusage)
host_to_target_rusage(target_rusage, &rusage);
if (target_rusage) {
rusage_err = host_to_target_rusage(target_rusage, &rusage);
if (rusage_err) {
ret = rusage_err;
}
}
}
}
break;