admin/llgo
1
0
Fork 0
Code Issues Pull Requests Actions Packages Projects Releases Wiki Activity

syscall: forkAndExecInChild

Browse Source
This commit is contained in:
xushiwei
2024-07-18 20:09:07 +08:00
parent ed224cf912
commit fa0ca23798
1 changed files with 8 additions and 11 deletions
Download Patch File Download Diff File Expand all files Collapse all files

19
internal/lib/syscall/exec_libc2.go
View File

@@ -8,6 +8,8 @@ package syscall
import ( import (
"github.com/goplus/llgo/c" "github.com/goplus/llgo/c"
"github.com/goplus/llgo/c/os"
"github.com/goplus/llgo/c/syscall"
) )
type SysProcAttr struct { type SysProcAttr struct {
@@ -255,23 +257,18 @@ func forkAndExecInChild(argv0 *c.Char, argv, envv **c.Char, chroot, dir *c.Char,
// Pass 2: dup fd[i] down onto i. // Pass 2: dup fd[i] down onto i.
for i = 0; i < len(fd); i++ { for i = 0; i < len(fd); i++ {
if fd[i] == -1 { if fd[i] == -1 {
/* TODO(xsw): os.Close(c.Int(i))
rawSyscall(abi.FuncPCABI0(libc_close_trampoline), uintptr(i), 0, 0)
continue continue
*/
panic("todo: syscall.forkAndExecInChild - fd[i] == -1")
} }
if fd[i] == i { if fd[i] == i {
/* TODO(xsw):
// dup2(i, i) won't clear close-on-exec flag on Linux, // dup2(i, i) won't clear close-on-exec flag on Linux,
// probably not elsewhere either. // probably not elsewhere either.
_, _, err1 = rawSyscall(abi.FuncPCABI0(libc_fcntl_trampoline), uintptr(fd[i]), F_SETFD, 0) ret := os.Fcntl(c.Int(fd[i]), syscall.F_SETFD, 0)
if err1 != 0 { if ret != 0 {
err1 = Errno(ret)
goto childerror goto childerror
} }
continue continue
*/
panic("todo: syscall.forkAndExecInChild - fd[i] == i")
} }
/* TODO(xsw): /* TODO(xsw):
// The new fd is created NOT close-on-exec, // The new fd is created NOT close-on-exec,
@@ -334,7 +331,7 @@ func forkAndExecInChild(argv0 *c.Char, argv, envv **c.Char, chroot, dir *c.Char,
*/ */
panic("todo: syscall.forkAndExecInChild - execve") panic("todo: syscall.forkAndExecInChild - execve")
// childerror: childerror:
/* TODO(xsw): /* TODO(xsw):
// send error code on pipe // send error code on pipe
rawSyscall(abi.FuncPCABI0(libc_write_trampoline), uintptr(pipe), uintptr(unsafe.Pointer(&err1)), unsafe.Sizeof(err1)) rawSyscall(abi.FuncPCABI0(libc_write_trampoline), uintptr(pipe), uintptr(unsafe.Pointer(&err1)), unsafe.Sizeof(err1))
@@ -342,5 +339,5 @@ func forkAndExecInChild(argv0 *c.Char, argv, envv **c.Char, chroot, dir *c.Char,
rawSyscall(abi.FuncPCABI0(libc_exit_trampoline), 253, 0, 0) rawSyscall(abi.FuncPCABI0(libc_exit_trampoline), 253, 0, 0)
} }
*/ */
// panic("todo: syscall.forkAndExecInChild - childerror") panic("todo: syscall.forkAndExecInChild - childerror")
} }