| /Documentation/timers/ |
| D | hpet_example.c | 81 int fd; in hpet_open_close() local
88 fd = open(argv[0], O_RDONLY); in hpet_open_close()
89 if (fd < 0) in hpet_open_close()
92 close(fd); in hpet_open_close()
101 int fd; in hpet_info() local
108 fd = open(argv[0], O_RDONLY); in hpet_info()
109 if (fd < 0) { in hpet_info()
114 if (ioctl(fd, HPET_INFO, &info) < 0) { in hpet_info()
125 close(fd); in hpet_info()
133 int iterations, i, fd; in hpet_poll() local
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| /Documentation/usb/ |
| D | gadget_printer.txt | 195 struct pollfd fd[1];
198 fd[0].fd = open(PRINTER_FILE, O_RDWR);
199 if (fd[0].fd < 0) {
200 printf("Error %d opening %s\n", fd[0].fd, PRINTER_FILE);
201 close(fd[0].fd);
205 fd[0].events = POLLIN | POLLRDNORM;
213 retval = poll(fd, 1, 1000);
215 if (retval && (fd[0].revents & POLLRDNORM)) {
218 bytes_read = read(fd[0].fd, buf, BUF_SIZE);
222 fd[0].fd, PRINTER_FILE);
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| /Documentation/spi/ |
| D | spidev_fdx.c | 17 static void do_read(int fd, int len) in do_read() argument
29 status = read(fd, buf, len); in do_read()
48 static void do_msg(int fd, int len) in do_msg() argument
67 status = ioctl(fd, SPI_IOC_MESSAGE(2), xfer); in do_msg()
79 static void dumpstat(const char *name, int fd) in dumpstat() argument
84 if (ioctl(fd, SPI_IOC_RD_MODE, &mode) < 0) { in dumpstat()
88 if (ioctl(fd, SPI_IOC_RD_LSB_FIRST, &lsb) < 0) { in dumpstat()
92 if (ioctl(fd, SPI_IOC_RD_BITS_PER_WORD, &bits) < 0) { in dumpstat()
96 if (ioctl(fd, SPI_IOC_RD_MAX_SPEED_HZ, &speed) < 0) { in dumpstat()
110 int fd; in main() local
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| D | spidev_test.c | 38 static void transfer(int fd) in transfer() argument
60 ret = ioctl(fd, SPI_IOC_MESSAGE(1), &tr); in transfer()
160 int fd; in main() local
164 fd = open(device, O_RDWR); in main()
165 if (fd < 0) in main()
171 ret = ioctl(fd, SPI_IOC_WR_MODE, &mode); in main()
175 ret = ioctl(fd, SPI_IOC_RD_MODE, &mode); in main()
182 ret = ioctl(fd, SPI_IOC_WR_BITS_PER_WORD, &bits); in main()
186 ret = ioctl(fd, SPI_IOC_RD_BITS_PER_WORD, &bits); in main()
193 ret = ioctl(fd, SPI_IOC_WR_MAX_SPEED_HZ, &speed); in main()
[all …]
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| /Documentation/laptops/ |
| D | hpfall.c | 38 int fd = open(unload_heads_path, O_RDONLY); in valid_disk() local
39 if (fd < 0) { in valid_disk()
44 close(fd); in valid_disk()
51 int fd = open(path, O_RDWR); in write_int() local
52 if (fd < 0) { in write_int()
57 if (write(fd, buf, strlen(buf)) != strlen(buf)) { in write_int()
61 close(fd); in write_int()
92 int fd, ret; in main() local
108 fd = open("/dev/freefall", O_RDONLY); in main()
109 if (fd < 0) { in main()
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| D | dslm.c | 29 static int check_powermode(int fd) in check_powermode() argument
34 if (ioctl(fd, HDIO_DRIVE_CMD, &args) in check_powermode()
36 && ioctl(fd, HDIO_DRIVE_CMD, &args)) { in check_powermode()
66 static void measure(int fd) in measure() argument
83 last_state = check_powermode(fd); in measure()
89 curr_state = check_powermode(fd); in measure()
134 int fd; in main() local
147 if (!(fd = open(disk, O_RDONLY|O_NONBLOCK))) { in main()
161 measure(fd); in main()
163 close(fd); in main()
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| /Documentation/watchdog/src/ |
| D | watchdog-test.c | 15 int fd; variable
26 ioctl(fd, WDIOC_KEEPALIVE, &dummy); in keep_alive()
36 close(fd); in term()
45 fd = open("/dev/watchdog", O_WRONLY); in main()
47 if (fd == -1) { in main()
56 ioctl(fd, WDIOC_SETOPTIONS, &flags); in main()
62 ioctl(fd, WDIOC_SETOPTIONS, &flags); in main()
84 close(fd); in main()
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| D | watchdog-simple.c | 8 int fd = open("/dev/watchdog", O_WRONLY); in main() local
10 if (fd == -1) { in main()
15 ret = write(fd, "\0", 1); in main()
22 close(fd); in main()
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| /Documentation/ptp/ |
| D | testptp.c | 55 static clockid_t get_clockid(int fd) in get_clockid() argument
58 #define FD_TO_CLOCKID(fd) ((~(clockid_t) (fd) << 3) | CLOCKFD) in get_clockid() argument
60 return FD_TO_CLOCKID(fd); in get_clockid()
137 int c, cnt, fd; in main() local
202 fd = open(device, O_RDWR); in main()
203 if (fd < 0) { in main()
208 clkid = get_clockid(fd); in main()
215 if (ioctl(fd, PTP_CLOCK_GETCAPS, &caps)) { in main()
286 if (ioctl(fd, PTP_EXTTS_REQUEST, &extts_request)) { in main()
293 cnt = read(fd, &event, sizeof(event)); in main()
[all …]
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| /Documentation/ia64/ |
| D | aliasing-test.c | 29 int fd, rc; in map_mem() local
33 fd = open(path, O_RDWR); in map_mem()
34 if (fd == -1) { in map_mem()
40 rc = ioctl(fd, PCIIOC_MMAP_IS_MEM); in map_mem()
45 addr = mmap(NULL, length, PROT_READ|PROT_WRITE, MAP_SHARED, fd, offset); in map_mem()
61 close(fd); in map_mem()
124 int fd, rc; in read_rom() local
127 fd = open(path, O_RDWR); in read_rom()
128 if (fd == -1) { in read_rom()
133 rc = write(fd, "1", 2); in read_rom()
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| /Documentation/ioctl/ |
| D | cdrom.txt | 101 ioctl(fd, CDROMPAUSE, 0);
115 ioctl(fd, CDROMRESUME, 0);
130 ioctl(fd, CDROMPLAYMSF, &msf);
154 ioctl(fd, CDROMPLAYTRKIND, &ti);
175 ioctl(fd, CDROMREADTOCHDR, &header);
193 ioctl(fd, CDROMREADTOCENTRY, &entry);
218 ioctl(fd, CDROMSTOP, 0);
236 ioctl(fd, CDROMSTART, 0);
255 ioctl(fd, CDROMEJECT, 0);
274 ioctl(fd, CDROMCLOSETRAY, 0);
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| D | hdio.txt | 90 ioctl(fd, HDIO_GETGEO, &geom);
136 ioctl(fd, HDIO_GET_UNMASKINTR, &val);
150 ioctl(fd, HDIO_SET_UNMASKINTR, val);
171 ioctl(fd, HDIO_GET_MULTCOUNT, &val);
187 ioctl(fd, HDIO_SET_MULTCOUNT, val);
239 ioctl(fd, HDIO_GET_IDENTITY, identity);
269 ioctl(fd, HDIO_GET_KEEPSETTINGS, &val);
288 ioctl(fd, HDIO_SET_KEEPSETTINGS, val);
308 ioctl(fd, HDIO_GET_32BIT, &val);
326 ioctl(fd, HDIO_GET_NOWERR, &val);
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| /Documentation/accounting/ |
| D | getdelays.c | 90 int fd; in create_nl_socket() local
93 fd = socket(AF_NETLINK, SOCK_RAW, protocol); in create_nl_socket()
94 if (fd < 0) in create_nl_socket()
98 if (setsockopt(fd, SOL_SOCKET, SO_RCVBUF, in create_nl_socket()
108 if (bind(fd, (struct sockaddr *) &local, sizeof(local)) < 0) in create_nl_socket()
111 return fd; in create_nl_socket()
113 close(fd); in create_nl_socket()
268 int fd = 0; in main() local
369 fd = open(logfile, O_WRONLY | O_CREAT | O_TRUNC, in main()
371 if (fd == -1) { in main()
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| /Documentation/filesystems/ |
| D | inotify.txt | 16 int fd = inotify_init ();
31 int wd = inotify_add_watch (fd, path, mask);
33 Where "fd" is the return value from inotify_init(), path is the path to the
40 int ret = inotify_rm_watch (fd, wd);
49 size_t len = read (fd, buf, BUF_LEN);
55 Each inotify instance fd is also select()- and poll()-able.
58 ioctl on the fd returned by inotify_init().
68 int inotify_add_watch (int fd, const char *path, __u32 mask);
69 int inotify_rm_watch (int fd, __u32 mask);
203 Q: What is the design decision behind not tying the watch to the open fd of
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| D | files.txt | 14 a put_files_struct() frees the file descriptor (fd) table.
21 elements - the fd sets (open_fds and close_on_exec, the
27 which the actual fd table is accessed. Initially the
58 3. For any update to the fd table, files->file_lock must
61 4. To look up the file structure given an fd, a reader
69 file = fcheck(fd);
77 of the fd (fget()/fget_light()) are lock-free, it is possible
83 file = fcheck_files(files, fd);
112 fd = locate_fd(files, file, start);
113 if (fd >= 0) {
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| D | dnotify_test.c | 18 int fd; in main() local
25 fd = open(".", O_RDONLY); in main()
26 fcntl(fd, F_SETSIG, SIGRTMIN + 1); in main()
27 fcntl(fd, F_NOTIFY, DN_MODIFY|DN_CREATE|DN_MULTISHOT); in main()
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| /Documentation/arm/SH-Mobile/ |
| D | vrl4.c | 80 ssize_t do_read(int fd, void *buf, size_t count) in do_read() argument
86 l = read(fd, buf + offset, count - offset); in do_read()
101 ssize_t do_write(int fd, const void *buf, size_t count) in do_write() argument
107 l = write(fd, buf + offset, count - offset); in do_write()
120 ssize_t write_zero(int fd, size_t len) in write_zero() argument
126 if (do_write(fd, &x, 1) < 0) in write_zero()
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| /Documentation/misc-devices/mei/ |
| D | mei-amt-version.c | 98 int fd; member
103 if (cl->fd != -1) in mei_deinit()
104 close(cl->fd); in mei_deinit()
105 cl->fd = -1; in mei_deinit()
122 me->fd = open("/dev/mei", O_RDWR); in mei_init()
123 if (me->fd == -1) { in mei_init()
132 result = ioctl(me->fd, IOCTL_MEI_CONNECT_CLIENT, &data); in mei_init()
163 rc = read(me->fd, buffer, len); in mei_recv_msg()
187 written = write(me->fd, buffer, len); in mei_send_msg()
196 FD_SET(me->fd, &set); in mei_send_msg()
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| /Documentation/networking/ |
| D | packet_mmap.txt | 90 int fd = socket(PF_PACKET, mode, htons(ETH_P_ALL));
99 is done by a simple call to close(fd).
184 setsockopt(fd, SOL_PACKET, PACKET_RX_RING, (void *) &req, sizeof(req))
186 setsockopt(fd, SOL_PACKET, PACKET_TX_RING, (void *) &req, sizeof(req))
399 mmap(0, size, PROT_READ|PROT_WRITE, MAP_SHARED, fd, 0);
457 pfd.fd = fd;
492 pfd.fd = fd;
502 setsockopt(fd, SOL_PACKET, PACKET_VERSION, &val, sizeof(val));
503 getsockopt(fd, SOL_PACKET, PACKET_VERSION, &val, sizeof(val));
578 int err, fd = socket(AF_PACKET, SOCK_RAW, htons(ETH_P_IP));
[all …]
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| D | tuntap.txt | 78 int fd, err;
80 if( (fd = open("/dev/net/tun", O_RDWR)) < 0 )
94 if( (err = ioctl(fd, TUNSETIFF, (void *) &ifr)) < 0 ){
95 close(fd);
99 return fd;
127 int fd, err, i;
143 if ((fd = open("/dev/net/tun", O_RDWR)) < 0)
145 err = ioctl(fd, TUNSETIFF, (void *)&ifr);
147 close(fd);
150 fds[i] = fd;
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| D | phonet.txt | 100 int fd;
102 fd = socket(PF_PHONET, SOCK_DGRAM, 0);
103 bind(fd, (struct sockaddr *)&addr, sizeof(addr));
106 sendto(fd, msg, msglen, 0, (struct sockaddr *)&addr, sizeof(addr));
107 len = recvfrom(fd, buf, sizeof(buf), 0,
122 ioctl(fd, SIOCPNADDRESOURCE, &res);
167 int fd;
169 fd = socket(PF_PHONET, SOCK_SEQPACKET, PN_PROTO_PIPE);
175 connect(fd, (struct sockaddr *)&spn, sizeof(spn));
177 close(fd);
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| /Documentation/misc-devices/ |
| D | max6875 | 70 i2c_smbus_write_byte_data(fd, 0x45, 1);
73 value = i2c_smbus_read_byte_data(fd, 0x45);
88 i2c_smbus_write_word_data(fd, 0x80, 0x5a03);
97 i2c_smbus_write_byte_data(fd, 0x81, 0x00);
100 value = i2c_smbus_read_byte(fd);
104 count = i2c_smbus_read_i2c_block_data(fd, 0x84, 16, buffer);
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| /Documentation/ |
| D | rtc.txt | 245 int i, fd, retval, irqcount = 0;
261 fd = open(rtc, O_RDONLY);
263 if (fd == -1) {
271 retval = ioctl(fd, RTC_UIE_ON, 0);
287 retval = read(fd, &data, sizeof(unsigned long));
304 FD_SET(fd, &readfds);
306 retval = select(fd+1, &readfds, NULL, NULL, &tv);
312 retval = read(fd, &data, sizeof(unsigned long));
323 retval = ioctl(fd, RTC_UIE_OFF, 0);
331 retval = ioctl(fd, RTC_RD_TIME, &rtc_tm);
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| /Documentation/sound/oss/ |
| D | MultiSound | 483 X int fd;
491 X if ((fd = open(argv[1], O_RDWR)) < 0) {
496 X if (ioctl(fd, SOUND_MIXER_READ_RECMASK, &recmask) < 0) {
499 X close(fd);
505 X close(fd);
509 X if (ioctl(fd, SOUND_MIXER_READ_RECSRC, &recsrc) < 0) {
512 X close(fd);
518 X if (ioctl(fd, SOUND_MIXER_WRITE_RECSRC, &recsrc) < 0) {
521 X close(fd);
525 X close(fd);
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| /Documentation/watchdog/ |
| D | watchdog-api.txt | 79 ioctl(fd, WDIOC_KEEPALIVE, 0);
95 ioctl(fd, WDIOC_SETTIMEOUT, &timeout);
104 ioctl(fd, WDIOC_GETTIMEOUT, &timeout);
116 ioctl(fd, WDIOC_SETPRETIMEOUT, &pretimeout);
126 ioctl(fd, WDIOC_GETPRETIMEOUT, &timeout);
137 ioctl(fd, WDIOC_GETTIMELEFT, &timeleft);
148 ioctl(fd, WDIOC_GETSUPPORT, &ident);
209 ioctl(fd, WDIOC_GETSTATUS, &flags);
213 ioctl(fd, WDIOC_GETBOOTSTATUS, &flags);
222 ioctl(fd, WDIOC_GETTEMP, &temperature);
[all …]
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