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Syscall target errno fixes, by Thayne Harbaugh.

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git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@3418 c046a42c-6fe2-441c-8c8c-71466251a162
This commit is contained in:
ths 2007-10-20 20:23:07 +00:00
parent 1931e26054
commit 0da46a6e2e
2 changed files with 100 additions and 55 deletions
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17
linux-user/signal.c
View file

@ -438,6 +438,7 @@ static void host_signal_handler(int host_signum, siginfo_t *info,
}
}
/* do_sigaltstack() returns target values and errnos. */
int do_sigaltstack(const struct target_sigaltstack *uss,
struct target_sigaltstack *uoss,
abi_ulong sp)
@ -457,18 +458,18 @@ int do_sigaltstack(const struct target_sigaltstack *uss,
{
struct target_sigaltstack ss;
ret = -EFAULT;
ret = -TARGET_EFAULT;
if (!access_ok(VERIFY_READ, uss, sizeof(*uss))
|| __get_user(ss.ss_sp, &uss->ss_sp)
|| __get_user(ss.ss_size, &uss->ss_size)
|| __get_user(ss.ss_flags, &uss->ss_flags))
goto out;
ret = -EPERM;
ret = -TARGET_EPERM;
if (on_sig_stack(sp))
goto out;
ret = -EINVAL;
ret = -TARGET_EINVAL;
if (ss.ss_flags != TARGET_SS_DISABLE
&& ss.ss_flags != TARGET_SS_ONSTACK
&& ss.ss_flags != 0)
@ -478,7 +479,7 @@ int do_sigaltstack(const struct target_sigaltstack *uss,
ss.ss_size = 0;
ss.ss_sp = 0;
} else {
ret = -ENOMEM;
ret = -TARGET_ENOMEM;
if (ss.ss_size < MINSIGSTKSZ)
goto out;
}
@ -488,7 +489,7 @@ int do_sigaltstack(const struct target_sigaltstack *uss,
}
if (uoss) {
ret = -EFAULT;
ret = -TARGET_EFAULT;
if (!access_ok(VERIFY_WRITE, uoss, sizeof(oss)))
goto out;
memcpy(uoss, &oss, sizeof(oss));
@ -499,12 +500,14 @@ out:
return ret;
}
/* do_sigaction() return host values and errnos */
int do_sigaction(int sig, const struct target_sigaction *act,
struct target_sigaction *oact)
{
struct emulated_sigaction *k;
struct sigaction act1;
int host_sig;
int ret = 0;
if (sig < 1 || sig > TARGET_NSIG || sig == SIGKILL || sig == SIGSTOP)
return -EINVAL;
@ -546,10 +549,10 @@ int do_sigaction(int sig, const struct target_sigaction *act,
} else {
act1.sa_sigaction = host_signal_handler;
}
sigaction(host_sig, &act1, NULL);
ret = sigaction(host_sig, &act1, NULL);
}
}
return 0;
return ret;
}
#ifndef offsetof