From fa7d4218c7038cb4bd29cbdf693306118b324030 Mon Sep 17 00:00:00 2001 From: Rich Felker Date: Thu, 18 Jul 2019 19:07:32 -0400 Subject: [PATCH] remove mips/n32/64 stat struct hacks from syscall machinery now that we have a kstat structure decoupled from the public struct stat, we can just use the broken kernel structures directly and let the code in fstatat do the translation. --- arch/mips/kstat.h | 8 +-- arch/mips/syscall_arch.h | 46 ++----------- arch/mips64/kstat.h | 26 ++++---- arch/mips64/syscall_arch.h | 125 ++---------------------------------- arch/mipsn32/kstat.h | 8 +-- arch/mipsn32/syscall_arch.h | 36 ++--------- 6 files changed, 36 insertions(+), 213 deletions(-) diff --git a/arch/mips/kstat.h b/arch/mips/kstat.h index 96e4ea34..5e637eab 100644 --- a/arch/mips/kstat.h +++ b/arch/mips/kstat.h @@ -1,13 +1,13 @@ struct kstat { - dev_t st_dev; - long __st_padding1[2]; + unsigned st_dev; + long __st_padding1[3]; ino_t st_ino; mode_t st_mode; nlink_t st_nlink; uid_t st_uid; gid_t st_gid; - dev_t st_rdev; - long __st_padding2[2]; + unsigned st_rdev; + long __st_padding2[3]; off_t st_size; long st_atime_sec; long st_atime_nsec; diff --git a/arch/mips/syscall_arch.h b/arch/mips/syscall_arch.h index 43bcdee7..e4854f50 100644 --- a/arch/mips/syscall_arch.h +++ b/arch/mips/syscall_arch.h @@ -5,18 +5,6 @@ #define SYSCALL_RLIM_INFINITY (-1UL/2) -#if _MIPSEL || __MIPSEL || __MIPSEL__ -#define __stat_fix(st) ((st),(void)0) -#else -#include -static inline void __stat_fix(long p) -{ - struct stat *st = (struct stat *)p; - st->st_dev >>= 32; - st->st_rdev >>= 32; -} -#endif - static inline long __syscall0(long n) { register long r7 __asm__("$7"); @@ -55,10 +43,7 @@ static inline long __syscall2(long n, long a, long b) "r"(r4), "r"(r5) : "$1", "$3", "$8", "$9", "$10", "$11", "$12", "$13", "$14", "$15", "$24", "$25", "hi", "lo", "memory"); - if (r7) return -r2; - long ret = r2; - if (n == SYS_stat64 || n == SYS_fstat64 || n == SYS_lstat64) __stat_fix(b); - return ret; + return r7 ? -r2 : r2; } static inline long __syscall3(long n, long a, long b, long c) @@ -74,10 +59,7 @@ static inline long __syscall3(long n, long a, long b, long c) "r"(r4), "r"(r5), "r"(r6) : "$1", "$3", "$8", "$9", "$10", "$11", "$12", "$13", "$14", "$15", "$24", "$25", "hi", "lo", "memory"); - if (r7) return -r2; - long ret = r2; - if (n == SYS_stat64 || n == SYS_fstat64 || n == SYS_lstat64) __stat_fix(b); - return ret; + return r7 ? -r2 : r2; } static inline long __syscall4(long n, long a, long b, long c, long d) @@ -93,11 +75,7 @@ static inline long __syscall4(long n, long a, long b, long c, long d) "r"(r4), "r"(r5), "r"(r6) : "$1", "$3", "$8", "$9", "$10", "$11", "$12", "$13", "$14", "$15", "$24", "$25", "hi", "lo", "memory"); - if (r7) return -r2; - long ret = r2; - if (n == SYS_stat64 || n == SYS_fstat64 || n == SYS_lstat64) __stat_fix(b); - if (n == SYS_fstatat64) __stat_fix(c); - return ret; + return r7 ? -r2 : r2; } static inline long __syscall5(long n, long a, long b, long c, long d, long e) @@ -116,11 +94,7 @@ static inline long __syscall5(long n, long a, long b, long c, long d, long e) : "ir"(n), "0"(r2), "1"(r7), "r"(r4), "r"(r5), "r"(r6) : "$1", "$3", "$9", "$10", "$11", "$12", "$13", "$14", "$15", "$24", "$25", "hi", "lo", "memory"); - if (r7) return -r2; - long ret = r2; - if (n == SYS_stat64 || n == SYS_fstat64 || n == SYS_lstat64) __stat_fix(b); - if (n == SYS_fstatat64) __stat_fix(c); - return r2; + return r7 ? -r2 : r2; } static inline long __syscall6(long n, long a, long b, long c, long d, long e, long f) @@ -140,11 +114,7 @@ static inline long __syscall6(long n, long a, long b, long c, long d, long e, lo : "ir"(n), "0"(r2), "1"(r7), "r"(r4), "r"(r5), "r"(r6) : "$1", "$3", "$10", "$11", "$12", "$13", "$14", "$15", "$24", "$25", "hi", "lo", "memory"); - if (r7) return -r2; - long ret = r2; - if (n == SYS_stat64 || n == SYS_fstat64 || n == SYS_lstat64) __stat_fix(b); - if (n == SYS_fstatat64) __stat_fix(c); - return r2; + return r7 ? -r2 : r2; } static inline long __syscall7(long n, long a, long b, long c, long d, long e, long f, long g) @@ -165,11 +135,7 @@ static inline long __syscall7(long n, long a, long b, long c, long d, long e, lo : "ir"(n), "0"(r2), "1"(r7), "r"(r4), "r"(r5), "r"(r6) : "$1", "$3", "$11", "$12", "$13", "$14", "$15", "$24", "$25", "hi", "lo", "memory"); - if (r7) return -r2; - long ret = r2; - if (n == SYS_stat64 || n == SYS_fstat64 || n == SYS_lstat64) __stat_fix(b); - if (n == SYS_fstatat64) __stat_fix(c); - return r2; + return r7 ? -r2 : r2; } #define VDSO_USEFUL diff --git a/arch/mips64/kstat.h b/arch/mips64/kstat.h index 74cb5a08..9a4468b4 100644 --- a/arch/mips64/kstat.h +++ b/arch/mips64/kstat.h @@ -1,23 +1,21 @@ struct kstat { - dev_t st_dev; + unsigned st_dev; int __pad1[3]; ino_t st_ino; mode_t st_mode; - nlink_t st_nlink; + unsigned st_nlink; uid_t st_uid; gid_t st_gid; - dev_t st_rdev; - unsigned int __pad2[2]; + unsigned st_rdev; + int __pad2[3]; off_t st_size; - int __pad3; - long st_atime_sec; - long st_atime_nsec; - long st_mtime_sec; - long st_mtime_nsec; - long st_ctime_sec; - long st_ctime_nsec; - blksize_t st_blksize; - unsigned int __pad4; + int st_atime_sec; + int st_atime_nsec; + int st_mtime_sec; + int st_mtime_nsec; + int st_ctime_sec; + int st_ctime_nsec; + unsigned st_blksize; + unsigned __pad3; blkcnt_t st_blocks; - int __pad5[14]; }; diff --git a/arch/mips64/syscall_arch.h b/arch/mips64/syscall_arch.h index 1e720c7d..852ac263 100644 --- a/arch/mips64/syscall_arch.h +++ b/arch/mips64/syscall_arch.h @@ -3,49 +3,6 @@ #define SYSCALL_RLIM_INFINITY (-1UL/2) -#include -struct kernel_stat { - unsigned int st_dev; - unsigned int __pad1[3]; - unsigned long long st_ino; - unsigned int st_mode; - unsigned int st_nlink; - int st_uid; - int st_gid; - unsigned int st_rdev; - unsigned int __pad2[3]; - long long st_size; - unsigned int st_atime_sec; - unsigned int st_atime_nsec; - unsigned int st_mtime_sec; - unsigned int st_mtime_nsec; - unsigned int st_ctime_sec; - unsigned int st_ctime_nsec; - unsigned int st_blksize; - unsigned int __pad3; - unsigned long long st_blocks; -}; - -static void __stat_fix(struct kernel_stat *kst, struct stat *st) -{ - st->st_dev = kst->st_dev; - st->st_ino = kst->st_ino; - st->st_mode = kst->st_mode; - st->st_nlink = kst->st_nlink; - st->st_uid = kst->st_uid; - st->st_gid = kst->st_gid; - st->st_rdev = kst->st_rdev; - st->st_size = kst->st_size; - st->st_atim.tv_sec = kst->st_atime_sec; - st->st_atim.tv_nsec = kst->st_atime_nsec; - st->st_mtim.tv_sec = kst->st_mtime_sec; - st->st_mtim.tv_nsec = kst->st_mtime_nsec; - st->st_ctim.tv_sec = kst->st_ctime_sec; - st->st_ctim.tv_nsec = kst->st_ctime_nsec; - st->st_blksize = kst->st_blksize; - st->st_blocks = kst->st_blocks; -} - #define SYSCALL_CLOBBERLIST \ "$1", "$3", "$10", "$11", "$12", "$13", \ "$14", "$15", "$24", "$25", "hi", "lo", "memory" @@ -77,95 +34,53 @@ static inline long __syscall1(long n, long a) static inline long __syscall2(long n, long a, long b) { - struct kernel_stat kst; - long ret; register long r4 __asm__("$4") = a; register long r5 __asm__("$5") = b; register long r7 __asm__("$7"); register long r2 __asm__("$2") = n; - if (n == SYS_stat || n == SYS_fstat || n == SYS_lstat) - r5 = (long) &kst; - __asm__ __volatile__ ( "syscall" : "+&r"(r2), "=r"(r7) : "r"(r4), "r"(r5) : SYSCALL_CLOBBERLIST); - - if (r7) return -r2; - ret = r2; - - if (n == SYS_stat || n == SYS_fstat || n == SYS_lstat) - __stat_fix(&kst, (struct stat *)b); - - return ret; + return r7 ? -r2 : r2; } static inline long __syscall3(long n, long a, long b, long c) { - struct kernel_stat kst; - long ret; register long r4 __asm__("$4") = a; register long r5 __asm__("$5") = b; register long r6 __asm__("$6") = c; register long r7 __asm__("$7"); register long r2 __asm__("$2") = n; - if (n == SYS_stat || n == SYS_fstat || n == SYS_lstat) - r5 = (long) &kst; - __asm__ __volatile__ ( "syscall" : "+&r"(r2), "=r"(r7) : "r"(r4), "r"(r5), "r"(r6) : SYSCALL_CLOBBERLIST); - - if (r7) return -r2; - ret = r2; - - if (n == SYS_stat || n == SYS_fstat || n == SYS_lstat) - __stat_fix(&kst, (struct stat *)b); - - return ret; + return r7 ? -r2 : r2; } static inline long __syscall4(long n, long a, long b, long c, long d) { - struct kernel_stat kst; - long ret; register long r4 __asm__("$4") = a; register long r5 __asm__("$5") = b; register long r6 __asm__("$6") = c; register long r7 __asm__("$7") = d; register long r2 __asm__("$2") = n; - if (n == SYS_stat || n == SYS_fstat || n == SYS_lstat) - r5 = (long) &kst; - if (n == SYS_newfstatat) - r6 = (long) &kst; - __asm__ __volatile__ ( "syscall" : "+&r"(r2), "+r"(r7) : "r"(r4), "r"(r5), "r"(r6) : SYSCALL_CLOBBERLIST); - - if (r7) return -r2; - ret = r2; - - 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; + return r7 ? -r2 : r2; } static inline long __syscall5(long n, long a, long b, long c, long d, long e) { - struct kernel_stat kst; - long ret; register long r4 __asm__("$4") = a; register long r5 __asm__("$5") = b; register long r6 __asm__("$6") = c; @@ -173,32 +88,16 @@ static inline long __syscall5(long n, long a, long b, long c, long d, long e) register long r8 __asm__("$8") = e; register long r2 __asm__("$2") = n; - if (n == SYS_stat || n == SYS_fstat || n == SYS_lstat) - r5 = (long) &kst; - if (n == SYS_newfstatat) - r6 = (long) &kst; - __asm__ __volatile__ ( "syscall" : "+&r"(r2), "+r"(r7) : "r"(r4), "r"(r5), "r"(r6), "r"(r8) : SYSCALL_CLOBBERLIST); - - if (r7) return -r2; - ret = r2; - - 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; + return r7 ? -r2 : r2; } static inline long __syscall6(long n, long a, long b, long c, long d, long e, long f) { - struct kernel_stat kst; - long ret; register long r4 __asm__("$4") = a; register long r5 __asm__("$5") = b; register long r6 __asm__("$6") = c; @@ -207,26 +106,12 @@ static inline long __syscall6(long n, long a, long b, long c, long d, long e, lo register long r9 __asm__("$9") = f; register long r2 __asm__("$2") = n; - if (n == SYS_stat || n == SYS_fstat || n == SYS_lstat) - r5 = (long) &kst; - if (n == SYS_newfstatat) - r6 = (long) &kst; - __asm__ __volatile__ ( "syscall" : "+&r"(r2), "+r"(r7) : "r"(r4), "r"(r5), "r"(r6), "r"(r8), "r"(r9) : SYSCALL_CLOBBERLIST); - - if (r7) return -r2; - ret = r2; - - 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; + return r7 ? -r2 : r2; } #define VDSO_USEFUL diff --git a/arch/mipsn32/kstat.h b/arch/mipsn32/kstat.h index 7be515c8..3841559c 100644 --- a/arch/mipsn32/kstat.h +++ b/arch/mipsn32/kstat.h @@ -1,13 +1,13 @@ struct kstat { - dev_t st_dev; - long __pad1[2]; + unsigned st_dev; + long __pad1[3]; ino_t st_ino; mode_t st_mode; nlink_t st_nlink; uid_t st_uid; gid_t st_gid; - dev_t st_rdev; - long __pad2[2]; + unsigned st_rdev; + long __pad2[3]; off_t st_size; long st_atime_sec; long st_atime_nsec; diff --git a/arch/mipsn32/syscall_arch.h b/arch/mipsn32/syscall_arch.h index 894c033d..78b217fa 100644 --- a/arch/mipsn32/syscall_arch.h +++ b/arch/mipsn32/syscall_arch.h @@ -3,18 +3,6 @@ #define SYSCALL_RLIM_INFINITY (-1UL/2) -#if _MIPSEL || __MIPSEL || __MIPSEL__ -#define __stat_fix(st) ((st),(void)0) -#else -#include -static inline void __stat_fix(long p) -{ - struct stat *st = (struct stat *)p; - st->st_dev >>= 32; - st->st_rdev >>= 32; -} -#endif - #define SYSCALL_CLOBBERLIST \ "$1", "$3", "$10", "$11", "$12", "$13", \ "$14", "$15", "$24", "$25", "hi", "lo", "memory" @@ -55,10 +43,7 @@ static inline long __syscall2(long n, long a, long b) : "+&r"(r2), "=r"(r7) : "r"(r4), "r"(r5) : SYSCALL_CLOBBERLIST); - if (r7) return -r2; - long ret = r2; - if (n == SYS_stat || n == SYS_fstat || n == SYS_lstat) __stat_fix(b); - return ret; + return r7 ? -r2 : r2; } static inline long __syscall3(long n, long a, long b, long c) @@ -73,10 +58,7 @@ static inline long __syscall3(long n, long a, long b, long c) : "+&r"(r2), "=r"(r7) : "r"(r4), "r"(r5), "r"(r6) : SYSCALL_CLOBBERLIST); - if (r7) return -r2; - long ret = r2; - if (n == SYS_stat || n == SYS_fstat || n == SYS_lstat) __stat_fix(b); - return ret; + return r7 ? -r2 : r2; } static inline long __syscall4(long n, long a, long b, long c, long d) @@ -91,11 +73,7 @@ static inline long __syscall4(long n, long a, long b, long c, long d) : "+&r"(r2), "+r"(r7) : "r"(r4), "r"(r5), "r"(r6) : SYSCALL_CLOBBERLIST); - if (r7) return -r2; - long ret = r2; - if (n == SYS_stat || n == SYS_fstat || n == SYS_lstat) __stat_fix(b); - if (n == SYS_newfstatat) __stat_fix(c); - return ret; + return r7 ? -r2 : r2; } static inline long __syscall5(long n, long a, long b, long c, long d, long e) @@ -111,9 +89,7 @@ static inline long __syscall5(long n, long a, long b, long c, long d, long e) : "+&r"(r2), "+r"(r7) : "r"(r4), "r"(r5), "r"(r6), "r"(r8) : SYSCALL_CLOBBERLIST); - if (n == SYS_stat || n == SYS_fstat || n == SYS_lstat) __stat_fix(b); - if (n == SYS_newfstatat) __stat_fix(c); - return r2; + return r7 ? -r2 : r2; } static inline long __syscall6(long n, long a, long b, long c, long d, long e, long f) @@ -130,9 +106,7 @@ static inline long __syscall6(long n, long a, long b, long c, long d, long e, lo : "+&r"(r2), "+r"(r7) : "r"(r4), "r"(r5), "r"(r6), "r"(r8), "r"(r9) : SYSCALL_CLOBBERLIST); - if (n == SYS_stat || n == SYS_fstat || n == SYS_lstat) __stat_fix(b); - if (n == SYS_newfstatat) __stat_fix(c); - return r2; + return r7 ? -r2 : r2; } #define VDSO_USEFUL -- 2.25.1