+++ /dev/null
-/*
- * Shell-like utility functions
- *
- * Copyright 2004, Broadcom Corporation
- * All Rights Reserved.
- *
- * THIS SOFTWARE IS OFFERED "AS IS", AND BROADCOM GRANTS NO WARRANTIES OF ANY
- * KIND, EXPRESS OR IMPLIED, BY STATUTE, COMMUNICATION OR OTHERWISE. BROADCOM
- * SPECIFICALLY DISCLAIMS ANY IMPLIED WARRANTIES OF MERCHANTABILITY, FITNESS
- * FOR A SPECIFIC PURPOSE OR NONINFRINGEMENT CONCERNING THIS SOFTWARE.
- *
- * $Id$
- */
-
-#include <stdio.h>
-#include <stdlib.h>
-#include <stdarg.h>
-#include <errno.h>
-#include <error.h>
-#include <fcntl.h>
-#include <limits.h>
-#include <unistd.h>
-#include <signal.h>
-#include <string.h>
-#include <sys/types.h>
-#include <sys/stat.h>
-#include <sys/wait.h>
-#include <termios.h>
-#include <sys/ioctl.h>
-#include <sys/time.h>
-#include <net/ethernet.h>
-
-#include <shutils.h>
-
-/*
- * Reads file and returns contents
- * @param fd file descriptor
- * @return contents of file or NULL if an error occurred
- */
-char *
-fd2str(int fd)
-{
- char *buf = NULL;
- size_t count = 0, n;
-
- do {
- buf = realloc(buf, count + 512);
- n = read(fd, buf + count, 512);
- if (n < 0) {
- free(buf);
- buf = NULL;
- }
- count += n;
- } while (n == 512);
-
- close(fd);
- if (buf)
- buf[count] = '\0';
- return buf;
-}
-
-/*
- * Reads file and returns contents
- * @param path path to file
- * @return contents of file or NULL if an error occurred
- */
-char *
-file2str(const char *path)
-{
- int fd;
-
- if ((fd = open(path, O_RDONLY)) == -1) {
- perror(path);
- return NULL;
- }
-
- return fd2str(fd);
-}
-
-/*
- * Waits for a file descriptor to change status or unblocked signal
- * @param fd file descriptor
- * @param timeout seconds to wait before timing out or 0 for no timeout
- * @return 1 if descriptor changed status or 0 if timed out or -1 on error
- */
-int
-waitfor(int fd, int timeout)
-{
- fd_set rfds;
- struct timeval tv = { timeout, 0 };
-
- FD_ZERO(&rfds);
- FD_SET(fd, &rfds);
- return select(fd + 1, &rfds, NULL, NULL, (timeout > 0) ? &tv : NULL);
-}
-
-/*
- * Concatenates NULL-terminated list of arguments into a single
- * commmand and executes it
- * @param argv argument list
- * @param path NULL, ">output", or ">>output"
- * @param timeout seconds to wait before timing out or 0 for no timeout
- * @param ppid NULL to wait for child termination or pointer to pid
- * @return return value of executed command or errno
- */
-int
-_eval(char *const argv[], char *path, int timeout, int *ppid)
-{
- pid_t pid;
- int status;
- int fd;
- int flags;
- int sig;
- char buf[254]="";
- int i;
-
- switch (pid = fork()) {
- case -1: /* error */
- perror("fork");
- return errno;
- case 0: /* child */
- /* Reset signal handlers set for parent process */
- for (sig = 0; sig < (_NSIG-1); sig++)
- signal(sig, SIG_DFL);
-
- /* Clean up */
- ioctl(0, TIOCNOTTY, 0);
- close(STDIN_FILENO);
- close(STDOUT_FILENO);
- close(STDERR_FILENO);
- setsid();
-
- /* We want to check the board if exist UART? , add by honor 2003-12-04 */
- if ((fd = open("/dev/console", O_RDWR)) < 0) {
- (void) open("/dev/null", O_RDONLY);
- (void) open("/dev/null", O_WRONLY);
- (void) open("/dev/null", O_WRONLY);
- }
- else{
- close(fd);
- (void) open("/dev/console", O_RDONLY);
- (void) open("/dev/console", O_WRONLY);
- (void) open("/dev/console", O_WRONLY);
- }
-
- /* Redirect stdout to <path> */
- if (path) {
- flags = O_WRONLY | O_CREAT;
- if (!strncmp(path, ">>", 2)) {
- /* append to <path> */
- flags |= O_APPEND;
- path += 2;
- } else if (!strncmp(path, ">", 1)) {
- /* overwrite <path> */
- flags |= O_TRUNC;
- path += 1;
- }
- if ((fd = open(path, flags, 0644)) < 0)
- perror(path);
- else {
- dup2(fd, STDOUT_FILENO);
- close(fd);
- }
- }
-
- /* execute command */
- for(i=0 ; argv[i] ; i++)
- snprintf(buf+strlen(buf), sizeof(buf), "%s ", argv[i]);
- dprintf("cmd=[%s]\n", buf);
- setenv("PATH", "/sbin:/bin:/usr/sbin:/usr/bin", 1);
- alarm(timeout);
- execvp(argv[0], argv);
- perror(argv[0]);
- exit(errno);
- default: /* parent */
- if (ppid) {
- *ppid = pid;
- return 0;
- } else {
- waitpid(pid, &status, 0);
- if (WIFEXITED(status))
- return WEXITSTATUS(status);
- else
- return status;
- }
- }
-}
-
-/*
- * Concatenates NULL-terminated list of arguments into a single
- * commmand and executes it
- * @param argv argument list
- * @return stdout of executed command or NULL if an error occurred
- */
-char *
-_backtick(char *const argv[])
-{
- int filedes[2];
- pid_t pid;
- int status;
- char *buf = NULL;
-
- /* create pipe */
- if (pipe(filedes) == -1) {
- perror(argv[0]);
- return NULL;
- }
-
- switch (pid = fork()) {
- case -1: /* error */
- return NULL;
- case 0: /* child */
- close(filedes[0]); /* close read end of pipe */
- dup2(filedes[1], 1); /* redirect stdout to write end of pipe */
- close(filedes[1]); /* close write end of pipe */
- execvp(argv[0], argv);
- exit(errno);
- break;
- default: /* parent */
- close(filedes[1]); /* close write end of pipe */
- buf = fd2str(filedes[0]);
- waitpid(pid, &status, 0);
- break;
- }
-
- return buf;
-}
-
-/*
- * Kills process whose PID is stored in plaintext in pidfile
- * @param pidfile PID file
- * @return 0 on success and errno on failure
- */
-int
-kill_pidfile(char *pidfile)
-{
- FILE *fp = fopen(pidfile, "r");
- char buf[256];
-
- if (fp && fgets(buf, sizeof(buf), fp)) {
- pid_t pid = strtoul(buf, NULL, 0);
- fclose(fp);
- return kill(pid, SIGTERM);
- } else
- return errno;
-}
-
-/*
- * fread() with automatic retry on syscall interrupt
- * @param ptr location to store to
- * @param size size of each element of data
- * @param nmemb number of elements
- * @param stream file stream
- * @return number of items successfully read
- */
-int
-safe_fread(void *ptr, size_t size, size_t nmemb, FILE *stream)
-{
- size_t ret = 0;
-
- do {
- clearerr(stream);
- ret += fread((char *)ptr + (ret * size), size, nmemb - ret, stream);
- } while (ret < nmemb && ferror(stream) && errno == EINTR);
-
- return ret;
-}
-
-/*
- * fwrite() with automatic retry on syscall interrupt
- * @param ptr location to read from
- * @param size size of each element of data
- * @param nmemb number of elements
- * @param stream file stream
- * @return number of items successfully written
- */
-int
-safe_fwrite(const void *ptr, size_t size, size_t nmemb, FILE *stream)
-{
- size_t ret = 0;
-
- do {
- clearerr(stream);
- ret += fwrite((char *)ptr + (ret * size), size, nmemb - ret, stream);
- } while (ret < nmemb && ferror(stream) && errno == EINTR);
-
- return ret;
-}
-
-/*
- * Convert Ethernet address string representation to binary data
- * @param a string in xx:xx:xx:xx:xx:xx notation
- * @param e binary data
- * @return TRUE if conversion was successful and FALSE otherwise
- */
-int
-ether_atoe(const char *a, unsigned char *e)
-{
- char *c = (char *) a;
- int i = 0;
-
- memset(e, 0, ETHER_ADDR_LEN);
- for (;;) {
- e[i++] = (unsigned char) strtoul(c, &c, 16);
- if (!*c++ || i == ETHER_ADDR_LEN)
- break;
- }
- return (i == ETHER_ADDR_LEN);
-}
-
-/*
- * Convert Ethernet address binary data to string representation
- * @param e binary data
- * @param a string in xx:xx:xx:xx:xx:xx notation
- * @return a
- */
-char *
-ether_etoa(const unsigned char *e, char *a)
-{
- char *c = a;
- int i;
-
- for (i = 0; i < ETHER_ADDR_LEN; i++) {
- if (i)
- *c++ = ':';
- c += sprintf(c, "%02X", e[i] & 0xff);
- }
- return a;
-}
projects / openwrt / svn-archive / archive.git / blobdiff