fix fstatat syscall on mips64

mips64 requires 'struct stat' conversion due to incorrect 32-bit
fields where time_t should be in the kernel version of the structure.
syscall_arch.h already performed the correct translation for stat,
fstat, and lstat syscalls, but omitted special handling for fstatat.

diff --git a/arch/mips64/syscall_arch.h b/arch/mips64/syscall_arch.h
index 1bd6c18..bb73dc3 100644 (file)
--- a/arch/mips64/syscall_arch.h
+++ b/arch/mips64/syscall_arch.h
@@ -149,13 +149,15 @@ static inline long __syscall4(long n, long a, long b, long c, long d)
        register long r7 __asm__("$7");
        register long r2 __asm__("$2");
 
+       r4 = a;
        r5 = b;
+       r6 = c;
+       r7 = d;
        if (n == SYS_stat || n == SYS_fstat || n == SYS_lstat)
                r5 = (long) &kst;
+       if (n == SYS_newfstatat)
+               r6 = (long) &kst;
 
-       r4 = a;
-       r6 = c;
-       r7 = d;
        __asm__ __volatile__ (
                "daddu $2,$0,%2 ; syscall"
                : "=&r"(r2), "=r"(r7) : "ir"(n), "0"(r2), "1"(r7),
@@ -168,6 +170,8 @@ static inline long __syscall4(long n, long a, long b, long c, long d)
 
        if (n == SYS_stat || n == SYS_fstat || n == SYS_lstat)
                __stat_fix(&kst, (struct stat *)b);
+       if (n == SYS_newfstatat)
+               __stat_fix(&kst, (struct stat *)c);
 
        return ret;
 }
@@ -224,16 +228,21 @@ static inline long __syscall4(long n, long a, long b, long c, long d)
 {
        long r2;
        long old_b = b;
+       long old_c = c;
        struct kernel_stat kst;
 
        if (n == SYS_stat || n == SYS_fstat || n == SYS_lstat)
                b = (long) &kst;
+       if (n == SYS_newfstatat)
+               c = (long) &kst;
 
        r2 = (__syscall)(n, a, b, c, d);
        if (r2 > -4096UL) return r2;
 
        if (n == SYS_stat || n == SYS_fstat || n == SYS_lstat)
                __stat_fix(&kst, (struct stat *)old_b);
+       if (n == SYS_newfstatat)
+               __stat_fix(&kst, (struct stat *)old_c);
 
        return r2;
 }
@@ -244,16 +253,21 @@ static inline long __syscall5(long n, long a, long b, long c, long d, long e)
 {
        long r2;
        long old_b = b;
+       long old_c = c;
        struct kernel_stat kst;
 
        if (n == SYS_stat || n == SYS_fstat || n == SYS_lstat)
                b = (long) &kst;
+       if (n == SYS_newfstatat)
+               c = (long) &kst;
 
        r2 = (__syscall)(n, a, b, c, d, e);
        if (r2 > -4096UL) return r2;
 
        if (n == SYS_stat || n == SYS_fstat || n == SYS_lstat)
                __stat_fix(&kst, (struct stat *)old_b);
+       if (n == SYS_newfstatat)
+               __stat_fix(&kst, (struct stat *)old_c);
 
        return r2;
 }
@@ -262,16 +276,21 @@ static inline long __syscall6(long n, long a, long b, long c, long d, long e, lo
 {
        long r2;
        long old_b = b;
+       long old_c = c;
        struct kernel_stat kst;
 
        if (n == SYS_stat || n == SYS_fstat || n == SYS_lstat)
                b = (long) &kst;
+       if (n == SYS_newfstatat)
+               c = (long) &kst;
 
        r2 = (__syscall)(n, a, b, c, d, e, f);
        if (r2 > -4096UL) return r2;
 
        if (n == SYS_stat || n == SYS_fstat || n == SYS_lstat)
                __stat_fix(&kst, (struct stat *)old_b);
+       if (n == SYS_newfstatat)
+               __stat_fix(&kst, (struct stat *)old_c);
 
        return r2;
 }