diff options
Diffstat (limited to 'dund/lib.h')
-rw-r--r-- | dund/lib.h | 88 |
1 files changed, 88 insertions, 0 deletions
diff --git a/dund/lib.h b/dund/lib.h new file mode 100644 index 00000000..e4b6e401 --- /dev/null +++ b/dund/lib.h @@ -0,0 +1,88 @@ +/* + * + * BlueZ - Bluetooth protocol stack for Linux + * + * Copyright (C) 2002-2003 Maxim Krasnyansky <maxk@qualcomm.com> + * Copyright (C) 2002-2008 Marcel Holtmann <marcel@holtmann.org> + * + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2 of the License, or + * (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software + * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA + * + */ + +#include <sys/types.h> +#include <errno.h> +#include <signal.h> + +#ifndef min +#define min(a,b) ( (a)<(b) ? (a):(b) ) +#endif + +/* IO cancelation */ +extern volatile sig_atomic_t __io_canceled; + +static inline void io_init(void) +{ + __io_canceled = 0; +} + +static inline void io_cancel(void) +{ + __io_canceled = 1; +} + +/* Read exactly len bytes (Signal safe)*/ +static inline int read_n(int fd, char *buf, int len) +{ + register int t = 0, w; + + while (!__io_canceled && len > 0) { + if ((w = read(fd, buf, len)) < 0) { + if (errno == EINTR || errno == EAGAIN) + continue; + return -1; + } + if (!w) + return 0; + len -= w; + buf += w; + t += w; + } + + return t; +} + +/* Write exactly len bytes (Signal safe)*/ +static inline int write_n(int fd, char *buf, int len) +{ + register int t = 0, w; + + while (!__io_canceled && len > 0) { + if ((w = write(fd, buf, len)) < 0) { + if (errno == EINTR || errno == EAGAIN) + continue; + return -1; + } + if (!w) + return 0; + len -= w; + buf += w; + t += w; + } + + return t; +} + +int ms_dun(int fd, int server, int timeo); |