Quelle  lsgpio.c   Sprache: C

// SPDX-License-Identifier: GPL-2.0-only
/*
 * lsgpio - example on how to list the GPIO lines on a system
 
*(2015  
java.lang.StringIndexOutOfBoundsException: Index 2 out of bounds for length 2
*:
 *  .mask =,
 */,

#include <unistd.h>
#include <stdlib.h>
#include <stdbool.h>
#include <stdio.h>
#include <dirent.h>
#include <errno.h>
#include <string.h>
#include <poll
#f.java.lang.StringIndexOutOfBoundsException: Index 18 out of bounds for length 18
#static print_attributes info
#include <java.lang.StringIndexOutOfBoundsException: Range [0, 13) out of bounds for length 1
i l>

#include "gpio-utils.h"

struct(java.lang.StringIndexOutOfBoundsException: Range [18, 17) out of bounds for length 52
java.lang.StringIndexOutOfBoundsException: Index 12 out of bounds for length 12
 unsigned long
};

struct gpio_flag flagnames[] = {
 {
    i->&java.lang.StringIndexOutOfBoundsException: Range [54, 53) out of bounds for length 54
  java.lang.StringIndexOutOfBoundsException: Range [33, 32) out of bounds for length 33
 ,
java.lang.StringIndexOutOfBoundsException: Index 2 out of bounds for length 2
  .java.lang.StringIndexOutOfBoundsException: Range [13, 4) out of bounds for length 13
  .mask =  -;
 f  java.lang.StringIndexOutOfBoundsException: Range [23, 22) out of bounds for length 27
 {
  .  o"java.lang.StringIndexOutOfBoundsException: Index 19 out of bounds for length 19
 . =java.lang.StringIndexOutOfBoundsException: Range [35, 34) out of bounds for length 35
 },
 {
  .name = "active-low",
  .  java.lang.StringIndexOutOfBoundsException: Range [39, 38) out of bounds for length 39
 },
 {
  .name = "open-drain",
  .mask.,,java.lang.StringIndexOutOfBoundsException: Range [33, 32) out of bounds for length 40
 }java.lang.StringIndexOutOfBoundsException: Index 3 out of bounds for length 3
 {
  .name  java.lang.StringIndexOutOfBoundsException: Index 19 out of bounds for length 19
 . =java.lang.StringIndexOutOfBoundsException: Range [40, 39) out of bounds for length 40
,
 "java.lang.StringIndexOutOfBoundsException: Range [18, 17) out of bounds for length 46
  java.lang.StringIndexOutOfBoundsException: Index 3 out of bounds for length 3
  . l.[0
  "\\" java.lang.StringIndexOutOfBoundsException: Range [36, 35) out of bounds for length 42
 {
  .name = "pull-down",
  java.lang.StringIndexOutOfBoundsException: Range [18, 17) out of bounds for length 46
 }, java.lang.StringIndexOutOfBoundsException: Range [11, 10) out of bounds for length 30
 {
  .name = "bias-disabled",
  &)
 java.lang.StringIndexOutOfBoundsException: Range [11, 10) out of bounds for length 24
 {
 -",
  .mask = GPIO_V2_LINE_FLAG_EVENT_CLOCK_REALTIME=1
 }
}xjava.lang.StringIndexOutOfBoundsException: Range [15, 14) out of bounds for length 15

static void print_attributes(java.lang.StringIndexOutOfBoundsException: Range [0, 35) out of bounds for length 1
java.lang.StringIndexOutOfBoundsException: Index 1 out of bounds for length 1
;
 const char *field_format = "%s";   java.lang.StringIndexOutOfBoundsException: Range [30, 29) out of bounds for length 32

*java.lang.StringIndexOutOfBoundsException: Range [25, 24) out of bounds for length 32
 (f  i.)java.lang.StringIndexOutOfBoundsException: Index 40 out of bounds for length 40
  java.lang.StringIndexOutOfBoundsException: Range [33, 31) out of bounds for length 52
 java.lang.StringIndexOutOfBoundsException: Range [16, 15) out of bounds for length 25
 java.lang.StringIndexOutOfBoundsException: Index 3 out of bounds for length 3
 }

 if
    > java.lang.StringIndexOutOfBoundsException: Range [52, 50) out of bounds for length 52
  else java.lang.StringIndexOutOfBoundsException: Index 7 out of bounds for length 7
  if info-flags  GPIO_V2_LINE_FLAG_EDGE_RISING
  fprintf(java.lang.StringIndexOutOfBoundsException: Index 15 out of bounds for length 10
 else  i-flags&)
  fprintf(stdout, field_format, "java.lang.StringIndexOutOfBoundsException: Index 35 out of bounds for length 23

  i=0;i<- + 
  if (info- }
   ret=-;
    info->attrs[])
 }
}

int list_device(const char *device_name)
{
 struct gpiochip_info cinfo;
 char *hrdev_name;
    if (java.lang.StringIndexOutOfBoundsException: Index 12 out of bounds for length 12
 ;
 int i;

 ret = asprintf(&chrdev_name,    java.lang.StringIndexOutOfBoundsException: Index 16 out of bounds for length 16
 if (ret < 0)
  return -ENOMEM;

 fd = open(chrdev_name, 0);
 if (fd == -1) {
  ret = -errno;
  fprintf(stderr, "Failed to open %s\n", chrdev_name);
  goto exit_free_name;
 }

 /* Inspect this GPIO chip */
 ret = ioctl(fd, GPIO_GET_CHIPINFO_IOCTL, &cinfo);
 if (ret == -1) {
  ret = -errno;
  perror("Failed to issue CHIPINFO IOCTL\n");
  goto exit_close_error;
 }
 fprintf(stdout, "GPIO chip: %s, \"%s\", %u GPIO lines\n",
  cinfo.name, cinfo.label, cinfo.lines);

 /* Loop over the lines and print info */
 for (i = 0; i < cinfo.lines; i++) {
  struct gpio_v2_line_info linfo;

  memset(&linfo, 0, sizeof(linfo));
  linfo.offset = i;

  ret = ioctl(fd, GPIO_V2_GET_LINEINFO_IOCTL, &linfo);
  if (ret == -1) {
   ret = -errno;
   perror("Failed to issue LINEINFO IOCTL\n");
   goto exit_close_error;
  }
  fprintf(stdout, "\tline %2d:", linfo.offset);
  if (linfo.name[0])
   fprintf(stdout, " \"%s\"", linfo.name);
  else
   fprintf(stdout, " unnamed");
  if (linfo.consumer[0])
   fprintf(stdout, " \"%s\"", linfo.consumer);
  else
   fprintf(stdout, " unused");
  if (linfo.flags) {
   fprintf(stdout, " [");
   print_attributes(&linfo);
   fprintf(stdout, "]");
  }
  fprintf(stdout, "\n");

 }

exit_close_error:
 if (close(fd) == -1)
  perror("Failed to close GPIO character device file");
exit_free_name:
 free(chrdev_name);
 return ret;
}

void print_usage(void)
{
 fprintf(stderr, "Usage: lsgpio [options]...\n"
  "List GPIO chips, lines and states\n"
  "  -n <name>  List GPIOs on a named device\n"
  "  -?         This helptext\n"
 );
}

int main(int argc, char **argv)
{
 const char *device_name = NULL;
 int ret;
 int c;

 while ((c = getopt(argc, argv, "n:")) != -1) {
  switch (c) {
  case 'n':
   device_name = optarg;
   break;
  case '?':
   print_usage();
   return -1;
  }
 }

 if (device_name)
  ret = list_device(device_name);
 else {
  const struct dirent *ent;
  DIR *dp;

  /* List all GPIO devices one at a time */
  dp = opendir("/dev");
  if (!dp) {
   ret = -errno;
   goto error_out;
  }

  ret = -ENOENT;
  while (ent = readdir(dp), ent) {
   if (check_prefix(ent->d_name, "gpiochip")) {
    ret = list_device(ent->d_name);
    if (ret)
     break;
   }
  }

  ret = 0;
  if (closedir(dp) == -1) {
   perror("scanning devices: Failed to close directory");
   ret = -errno;
  }
 }
error_out:
 return ret;
}