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Merge pull request #6632 from jasonKercher/fix6620

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sys/linux: emulate dup2 better on arm64 and riscv
This commit is contained in:
gingerBill
2026-04-29 09:51:43 +01:00
committed by GitHub
parent 2358cffb85 f388ebc4e3
commit 5dfd110be3
1 changed files with 9 additions and 1 deletions
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10
core/sys/linux/sys.odin
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@@ -419,7 +419,15 @@ dup :: proc "contextless" (fd: Fd) -> (Fd, Errno) {
dup2 :: proc "contextless" (old: Fd, new: Fd) -> (Fd, Errno) {
when ODIN_ARCH == .arm64 || ODIN_ARCH == .riscv64 {
ret := syscall(SYS_dup3, old, new, 0)
return errno_unwrap(ret, Fd)
// Differences between dup2 and dup3 are:
// - dup3 takes a flags argument
// - dup2 does not return EINVAL
fd, errno := errno_unwrap(ret, Fd)
if errno == .EINVAL {
errno = .NONE
}
return fd, errno
} else {
ret := syscall(SYS_dup2, old, new)
return errno_unwrap(ret, Fd)