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add lstat

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clean up some code
fix comments
add paramter names to interface

R=ken
OCL=13521
CL=13521
This commit is contained in:
Rob Pike 2008-07-28 13:07:58 -07:00
parent 4a9b4e6604
commit d302244c6c
7 changed files with 46 additions and 19 deletions
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6
src/syscall/errstr_darwin.go
View File

@ -329,8 +329,6 @@ func init(){
error[ELAST] = "Must be equal largest errno";
}
var digits string = "0123456789"
func str(val int64) string { // do it here rather than with fmt to avoid dependency
if val < 0 {
return "-" + str(-val);
@ -338,11 +336,11 @@ func str(val int64) string { // do it here rather than with fmt to avoid depend
var buf [32]byte; // big enough for int64
i := len(buf)-1;
for val >= 10 {
buf[i] = digits[val%10];
buf[i] = val%10 + '0';
i--;
val /= 10;
}
buf[i] = digits[val];
buf[i] = val + '0';
return string(buf)[i:len(buf)];
}

6
src/syscall/errstr_linux.go
View File

@ -403,8 +403,6 @@ func init(){
error[EKEYREJECTED] = "Key was rejected by service";
}
var digits string = "0123456789"
func str(val int64) string { // do it here rather than with fmt to avoid dependency
if val < 0 {
return "-" + str(-val);
@ -412,11 +410,11 @@ func str(val int64) string { // do it here rather than with fmt to avoid depend
var buf [32]byte; // big enough for int64
i := len(buf)-1;
for val >= 10 {
buf[i] = digits[val%10];
buf[i] = val%10 + '0';
i--;
val /= 10;
}
buf[i] = digits[val];
buf[i] = val + '0';
return string(buf)[i:len(buf)];
}

9
src/syscall/stat_amd64_darwin.go
View File

@ -4,13 +4,14 @@
package syscall
func stat(*byte, *Stat) (ret int64, errno int64);
func fstat(int64, *Stat) (ret int64, errno int64);
func stat(name *byte, buf *Stat) (ret int64, errno int64);
func fstat(fd int64, buf *Stat) (ret int64, errno int64);
func lstat(name *byte, buf *Stat) (ret int64, errno int64);
export Stat
export stat, fstat
export stat, fstat, lstat
// Stat and relatives for Linux
// Stat and relatives for Darwin
type dev_t uint32;
type ino_t uint64;

7
src/syscall/stat_amd64_linux.go
View File

@ -4,11 +4,12 @@
package syscall
func stat(*byte, *Stat) (ret int64, errno int64);
func fstat(int64, *Stat) (ret int64, errno int64);
func stat(name *byte, buf *Stat) (ret int64, errno int64);
func fstat(fd int64, buf *Stat) (ret int64, errno int64);
func lstat(name *byte, buf *Stat) (ret int64, errno int64);
export Stat
export stat, fstat
export stat, fstat, lstat
// Stat and relatives for Linux

8
src/syscall/syscall.go
View File

@ -11,9 +11,9 @@ package syscall
* in these calling sequences.
*/
func open(*byte, int64) (ret int64, errno int64);
func close(int64) (ret int64, errno int64);
func read(int64, *byte, int64) (ret int64, errno int64);
func write(int64, *byte, int64) (ret int64, errno int64);
func open(name *byte, mode int64) (ret int64, errno int64);
func close(fd int64) (ret int64, errno int64);
func read(fd int64, buf *byte, nbytes int64) (ret int64, errno int64);
func write(fd int64, buf *byte, nbytes int64) (ret int64, errno int64);
export open, close, read, write

13
src/syscall/syscall_amd64_darwin.s
View File

@ -85,3 +85,16 @@ TEXT syscall·fstat(SB),1,$-8
MOVQ AX, 24(SP)
MOVQ $0, 32(SP)
RET
TEXT syscall·lstat(SB),1,$-8
MOVQ 8(SP), DI
MOVQ 16(SP), SI
MOVL $(0x2000000+340), AX // syscall entry
SYSCALL
JCC 4(PC)
MOVQ $-1, 24(SP)
MOVQ AX, 32(SP)
RET
MOVQ AX, 24(SP)
MOVQ $0, 32(SP)
RET

16
src/syscall/syscall_amd64_linux.s
View File

@ -99,3 +99,19 @@ TEXT syscall·fstat(SB),1,$0-16
MOVQ AX, 24(SP)
MOVQ $0, 32(SP)
RET
TEXT syscall·lstat(SB),1,$0-16
MOVL 8(SP), DI
MOVQ 16(SP), SI
MOVQ $0, DX
MOVQ $6, AX // syscall entry
SYSCALL
CMPQ AX, $0xfffffffffffff001
JLS 5(PC)
MOVQ $-1, 24(SP)
NEGQ AX
MOVQ AX, 32(SP)
RET
MOVQ AX, 24(SP)
MOVQ $0, 32(SP)
RET