Retry interrupted open() calls (proposed by Yigael Felishman).
Linux open(2) doesn't list EINTR, but FreeBSD's open(2) does. git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@3043 c046a42c-6fe2-441c-8c8c-71466251a162
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6d8aa3bfed
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42
vl.c
42
vl.c
@ -204,6 +204,8 @@ unsigned int nb_prom_envs = 0;
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const char *prom_envs[MAX_PROM_ENVS];
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#endif
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#define TFR(expr) do { if ((expr) != -1) break; } while (errno == EINTR)
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/***********************************************************/
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/* x86 ISA bus support */
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@ -1029,7 +1031,7 @@ static int rtc_fd;
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static int start_rtc_timer(void)
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{
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rtc_fd = open("/dev/rtc", O_RDONLY);
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TFR(rtc_fd = open("/dev/rtc", O_RDONLY));
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if (rtc_fd < 0)
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return -1;
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if (ioctl(rtc_fd, RTC_IRQP_SET, RTC_FREQ) < 0) {
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@ -1640,7 +1642,7 @@ static CharDriverState *qemu_chr_open_file_out(const char *file_out)
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{
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int fd_out;
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fd_out = open(file_out, O_WRONLY | O_TRUNC | O_CREAT | O_BINARY, 0666);
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TFR(fd_out = open(file_out, O_WRONLY | O_TRUNC | O_CREAT | O_BINARY, 0666));
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if (fd_out < 0)
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return NULL;
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return qemu_chr_open_fd(-1, fd_out);
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@ -1653,14 +1655,14 @@ static CharDriverState *qemu_chr_open_pipe(const char *filename)
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snprintf(filename_in, 256, "%s.in", filename);
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snprintf(filename_out, 256, "%s.out", filename);
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fd_in = open(filename_in, O_RDWR | O_BINARY);
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fd_out = open(filename_out, O_RDWR | O_BINARY);
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TFR(fd_in = open(filename_in, O_RDWR | O_BINARY));
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TFR(fd_out = open(filename_out, O_RDWR | O_BINARY));
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if (fd_in < 0 || fd_out < 0) {
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if (fd_in >= 0)
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close(fd_in);
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if (fd_out >= 0)
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close(fd_out);
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fd_in = fd_out = open(filename, O_RDWR | O_BINARY);
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TFR(fd_in = fd_out = open(filename, O_RDWR | O_BINARY));
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if (fd_in < 0)
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return NULL;
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}
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@ -1911,14 +1913,14 @@ static CharDriverState *qemu_chr_open_tty(const char *filename)
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CharDriverState *chr;
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int fd;
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fd = open(filename, O_RDWR | O_NONBLOCK);
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if (fd < 0)
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return NULL;
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TFR(fd = open(filename, O_RDWR | O_NONBLOCK));
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fcntl(fd, F_SETFL, O_NONBLOCK);
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tty_serial_init(fd, 115200, 'N', 8, 1);
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chr = qemu_chr_open_fd(fd, fd);
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if (!chr)
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if (!chr) {
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close(fd);
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return NULL;
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}
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chr->chr_ioctl = tty_serial_ioctl;
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qemu_chr_reset(chr);
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return chr;
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@ -2041,7 +2043,7 @@ static CharDriverState *qemu_chr_open_pp(const char *filename)
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ParallelCharDriver *drv;
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int fd;
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fd = open(filename, O_RDWR);
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TFR(fd = open(filename, O_RDWR));
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if (fd < 0)
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return NULL;
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@ -3463,7 +3465,7 @@ static int tap_open(char *ifname, int ifname_size)
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char *dev;
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struct stat s;
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fd = open("/dev/tap", O_RDWR);
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TFR(fd = open("/dev/tap", O_RDWR));
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if (fd < 0) {
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fprintf(stderr, "warning: could not open /dev/tap: no virtual network emulation\n");
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return -1;
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@ -3507,12 +3509,14 @@ int tap_alloc(char *dev)
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if( ip_fd )
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close(ip_fd);
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if( (ip_fd = open("/dev/udp", O_RDWR, 0)) < 0){
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TFR(ip_fd = open("/dev/udp", O_RDWR, 0));
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if (ip_fd < 0) {
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syslog(LOG_ERR, "Can't open /dev/ip (actually /dev/udp)");
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return -1;
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}
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if( (tap_fd = open("/dev/tap", O_RDWR, 0)) < 0){
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TFR(tap_fd = open("/dev/tap", O_RDWR, 0));
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if (tap_fd < 0) {
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syslog(LOG_ERR, "Can't open /dev/tap");
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return -1;
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}
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@ -3525,7 +3529,8 @@ int tap_alloc(char *dev)
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if ((ppa = ioctl (tap_fd, I_STR, &strioc_ppa)) < 0)
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syslog (LOG_ERR, "Can't assign new interface");
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if( (if_fd = open("/dev/tap", O_RDWR, 0)) < 0){
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TFR(if_fd = open("/dev/tap", O_RDWR, 0));
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if (if_fd < 0) {
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syslog(LOG_ERR, "Can't open /dev/tap (2)");
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return -1;
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}
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@ -3557,7 +3562,8 @@ int tap_alloc(char *dev)
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if (ioctl (ip_fd, I_PUSH, "arp") < 0)
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syslog (LOG_ERR, "Can't push ARP module (3)\n");
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/* Open arp_fd */
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if ((arp_fd = open ("/dev/tap", O_RDWR, 0)) < 0)
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TFR(arp_fd = open ("/dev/tap", O_RDWR, 0));
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if (arp_fd < 0)
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syslog (LOG_ERR, "Can't open %s\n", "/dev/tap");
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/* Set ifname to arp */
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@ -3613,7 +3619,7 @@ static int tap_open(char *ifname, int ifname_size)
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struct ifreq ifr;
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int fd, ret;
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fd = open("/dev/net/tun", O_RDWR);
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TFR(fd = open("/dev/net/tun", O_RDWR));
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if (fd < 0) {
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fprintf(stderr, "warning: could not open /dev/net/tun: no virtual network emulation\n");
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return -1;
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@ -3649,7 +3655,7 @@ static int net_tap_init(VLANState *vlan, const char *ifname1,
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pstrcpy(ifname, sizeof(ifname), ifname1);
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else
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ifname[0] = '\0';
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fd = tap_open(ifname, sizeof(ifname));
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TFR(fd = tap_open(ifname, sizeof(ifname)));
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if (fd < 0)
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return -1;
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@ -8038,7 +8044,7 @@ int main(int argc, char **argv)
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if (len != 1)
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exit(1);
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fd = open("/dev/null", O_RDWR);
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TFR(fd = open("/dev/null", O_RDWR));
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if (fd == -1)
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exit(1);
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