Index: fusl/src/unistd/dup3.c |
diff --git a/fusl/src/unistd/dup3.c b/fusl/src/unistd/dup3.c |
index 0eb6caf59e6e1b0015b231632b6c20f879c5ad95..1a694a701b0ab3d841eb8c7c8d05476207e13f40 100644 |
--- a/fusl/src/unistd/dup3.c |
+++ b/fusl/src/unistd/dup3.c |
@@ -5,21 +5,26 @@ |
#include "syscall.h" |
#include "libc.h" |
-int __dup3(int old, int new, int flags) |
-{ |
- int r; |
+int __dup3(int old, int new, int flags) { |
+ int r; |
#ifdef SYS_dup2 |
- if (old==new) return __syscall_ret(-EINVAL); |
- if (flags & O_CLOEXEC) { |
- while ((r=__syscall(SYS_dup3, old, new, flags))==-EBUSY); |
- if (r!=-ENOSYS) return __syscall_ret(r); |
- } |
- while ((r=__syscall(SYS_dup2, old, new))==-EBUSY); |
- if (flags & O_CLOEXEC) __syscall(SYS_fcntl, new, F_SETFD, FD_CLOEXEC); |
+ if (old == new) |
+ return __syscall_ret(-EINVAL); |
+ if (flags & O_CLOEXEC) { |
+ while ((r = __syscall(SYS_dup3, old, new, flags)) == -EBUSY) |
+ ; |
+ if (r != -ENOSYS) |
+ return __syscall_ret(r); |
+ } |
+ while ((r = __syscall(SYS_dup2, old, new)) == -EBUSY) |
+ ; |
+ if (flags & O_CLOEXEC) |
+ __syscall(SYS_fcntl, new, F_SETFD, FD_CLOEXEC); |
#else |
- while ((r=__syscall(SYS_dup3, old, new, flags))==-EBUSY); |
+ while ((r = __syscall(SYS_dup3, old, new, flags)) == -EBUSY) |
+ ; |
#endif |
- return __syscall_ret(r); |
+ return __syscall_ret(r); |
} |
weak_alias(__dup3, dup3); |