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use syscall_arg_t and __scc macro for arguments to __alt_socketcall

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otherwise, pointer arguments are sign-extended on x32, resulting in
EFAULT.
This commit is contained in:
Alex Xu (Hello71) 2022-07-01 11:09:10 -04:00 committed by Rich Felker
parent 46d1c7801b
commit 2404d9d643
1 changed files with 3 additions and 3 deletions
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6
src/internal/syscall.h
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@ -58,7 +58,7 @@ hidden long __syscall_ret(unsigned long),
#define __syscall_cp(...) __SYSCALL_DISP(__syscall_cp,__VA_ARGS__)
#define syscall_cp(...) __syscall_ret(__syscall_cp(__VA_ARGS__))
static inline long __alt_socketcall(int sys, int sock, int cp, long a, long b, long c, long d, long e, long f)
static inline long __alt_socketcall(int sys, int sock, int cp, syscall_arg_t a, syscall_arg_t b, syscall_arg_t c, syscall_arg_t d, syscall_arg_t e, syscall_arg_t f)
{
long r;
if (cp) r = __syscall_cp(sys, a, b, c, d, e, f);
@ -71,9 +71,9 @@ static inline long __alt_socketcall(int sys, int sock, int cp, long a, long b, l
return r;
}
#define __socketcall(nm, a, b, c, d, e, f) __alt_socketcall(SYS_##nm, __SC_##nm, 0, \
(long)(a), (long)(b), (long)(c), (long)(d), (long)(e), (long)(f))
__scc(a), __scc(b), __scc(c), __scc(d), __scc(e), __scc(f))
#define __socketcall_cp(nm, a, b, c, d, e, f) __alt_socketcall(SYS_##nm, __SC_##nm, 1, \
(long)(a), (long)(b), (long)(c), (long)(d), (long)(e), (long)(f))
__scc(a), __scc(b), __scc(c), __scc(d), __scc(e), __scc(f))
/* fixup legacy 16-bit junk */