diff options
Diffstat (limited to 'src/serial.c')
| -rw-r--r-- | src/serial.c | 20 |
1 files changed, 17 insertions, 3 deletions
diff --git a/src/serial.c b/src/serial.c index 66ee7564..44032263 100644 --- a/src/serial.c +++ b/src/serial.c @@ -59,16 +59,30 @@ int osmo_serial_init(const char *dev, speed_t baudrate) { - int rc, fd=0, v24; + int rc, fd=0, v24, flags; struct termios tio; - /* Open device */ - fd = open(dev, O_RDWR | O_NOCTTY); + /* Use nonblock as the device might block otherwise */ + fd = open(dev, O_RDWR | O_NOCTTY | O_SYNC | O_NONBLOCK); if (fd < 0) { dbg_perror("open"); return -errno; } + /* now put it into blcoking mode */ + flags = fcntl(fd, F_GETFL, 0); + if (flags < 0) { + dbg_perror("fcntl get flags"); + return -1; + } + + flags &= ~O_NONBLOCK; + rc = fcntl(fd, F_SETFL, flags); + if (rc != 0) { + dbg_perror("fcntl set flags"); + return -1; + } + /* Configure serial interface */ rc = tcgetattr(fd, &tio); if (rc < 0) { |