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authorRich Felker <dalias@aerifal.cx>2019-07-18 19:07:32 -0400
committerRich Felker <dalias@aerifal.cx>2019-07-18 19:38:37 -0400
commitfa7d4218c7038cb4bd29cbdf693306118b324030 (patch)
tree768d3898a9ec703ee09f426eb0fa33776b83b843
parent01ae3fc6d48f4a45535189b7a6db286535af08ca (diff)
downloadmusl-fa7d4218c7038cb4bd29cbdf693306118b324030.tar.gz
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.
-rw-r--r--arch/mips/kstat.h8
-rw-r--r--arch/mips/syscall_arch.h46
-rw-r--r--arch/mips64/kstat.h26
-rw-r--r--arch/mips64/syscall_arch.h125
-rw-r--r--arch/mipsn32/kstat.h8
-rw-r--r--arch/mipsn32/syscall_arch.h36
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 <sys/stat.h>
-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 <sys/stat.h>
-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 <sys/stat.h>
-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