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| 1 | #ifndef _HURD_FD_H |
|---|---|
| 2 | #include_next <hurd/fd.h> |
| 3 | |
| 4 | #ifndef _ISOMAC |
| 5 | #include <libc-lock.h> |
| 6 | |
| 7 | struct _hurd_fd_port_use_data |
| 8 | { |
| 9 | struct hurd_fd *d; |
| 10 | struct hurd_userlink ulink, ctty_ulink; |
| 11 | io_t port, ctty; |
| 12 | }; |
| 13 | |
| 14 | extern void _hurd_fd_port_use_cleanup (void *arg); |
| 15 | |
| 16 | /* Like HURD_DPORT_USE, but cleans fd on cancel. */ |
| 17 | #define HURD_DPORT_USE_CANCEL(fd, expr) \ |
| 18 | HURD_FD_USE ((fd), HURD_FD_PORT_USE_CANCEL (descriptor, (expr))) |
| 19 | |
| 20 | /* Like HURD_FD_PORT_USE, but cleans fd on cancel. */ |
| 21 | #define HURD_FD_PORT_USE_CANCEL(fd, expr) \ |
| 22 | ({ error_t __result; \ |
| 23 | struct _hurd_fd_port_use_data __d; \ |
| 24 | io_t port, ctty; \ |
| 25 | void *__crit; \ |
| 26 | __d.d = (fd); \ |
| 27 | __crit = _hurd_critical_section_lock (); \ |
| 28 | __spin_lock (&__d.d->port.lock); \ |
| 29 | if (__d.d->port.port == MACH_PORT_NULL) \ |
| 30 | { \ |
| 31 | __spin_unlock (&__d.d->port.lock); \ |
| 32 | _hurd_critical_section_unlock (__crit); \ |
| 33 | __result = EBADF; \ |
| 34 | } \ |
| 35 | else \ |
| 36 | { \ |
| 37 | __d.ctty = ctty = _hurd_port_get (&__d.d->ctty, &__d.ctty_ulink); \ |
| 38 | __d.port = port = _hurd_port_locked_get (&__d.d->port, &__d.ulink); \ |
| 39 | __libc_cleanup_push (_hurd_fd_port_use_cleanup, &__d); \ |
| 40 | _hurd_critical_section_unlock (__crit); \ |
| 41 | __result = (expr); \ |
| 42 | __libc_cleanup_pop (1); \ |
| 43 | } \ |
| 44 | __result; }) |
| 45 | |
| 46 | libc_hidden_proto (_hurd_intern_fd) |
| 47 | libc_hidden_proto (_hurd_fd_error) |
| 48 | libc_hidden_proto (_hurd_fd_error_signal) |
| 49 | # ifdef _HURD_FD_H_HIDDEN_DEF |
| 50 | libc_hidden_def (_hurd_fd_error) |
| 51 | libc_hidden_def (_hurd_fd_error_signal) |
| 52 | # endif |
| 53 | #endif |
| 54 | #endif |
| 55 |
Warning: This file is not a C or C++ file. It does not have highlighting.