--- /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.
+ *
+ * $Id$
+ */
+
+#ifndef _shutils_h_
+#define _shutils_h_
+#include <string.h>
+/*
+ * Reads file and returns contents
+ * @param fd file descriptor
+ * @return contents of file or NULL if an error occurred
+ */
+extern char * fd2str(int fd);
+
+/*
+ * Reads file and returns contents
+ * @param path path to file
+ * @return contents of file or NULL if an error occurred
+ */
+extern char * file2str(const char *path);
+
+/*
+ * Waits for a file descriptor to become available for reading 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
+ */
+extern int waitfor(int fd, int timeout);
+
+/*
+ * 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
+ */
+extern int _eval(char *const argv[], char *path, int timeout, pid_t *ppid);
+
+/*
+ * 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
+ */
+extern char * _backtick(char *const argv[]);
+
+/*
+ * Kills process whose PID is stored in plaintext in pidfile
+ * @param pidfile PID file
+ * @return 0 on success and errno on failure
+ */
+extern int kill_pidfile(char *pidfile);
+
+/*
+ * 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
+ */
+extern int safe_fread(void *ptr, size_t size, size_t nmemb, FILE *stream);
+
+/*
+ * 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
+ */
+extern int safe_fwrite(const void *ptr, size_t size, size_t nmemb, FILE *stream);
+
+/*
+ * 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
+ */
+extern int ether_atoe(const char *a, unsigned char *e);
+
+/*
+ * 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
+ */
+extern char * ether_etoa(const unsigned char *e, char *a);
+
+/*
+ * Concatenate two strings together into a caller supplied buffer
+ * @param s1 first string
+ * @param s2 second string
+ * @param buf buffer large enough to hold both strings
+ * @return buf
+ */
+static inline char * strcat_r(const char *s1, const char *s2, char *buf)
+{
+ strcpy(buf, s1);
+ strcat(buf, s2);
+ return buf;
+}
+
+/* Check for a blank character; that is, a space or a tab */
+#define isblank(c) ((c) == ' ' || (c) == '\t')
+
+/* Strip trailing CR/NL from string <s> */
+#define chomp(s) ({ \
+ char *c = (s) + strlen((s)) - 1; \
+ while ((c > (s)) && (*c == '\n' || *c == '\r' || *c == ' ')) \
+ *c-- = '\0'; \
+ s; \
+})
+
+/* Simple version of _backtick() */
+#define backtick(cmd, args...) ({ \
+ char *argv[] = { cmd, ## args, NULL }; \
+ _backtick(argv); \
+})
+
+/* Simple version of _eval() (no timeout and wait for child termination) */
+#define eval(cmd, args...) ({ \
+ char *argv[] = { cmd, ## args, NULL }; \
+ _eval(argv, ">/dev/console", 0, NULL); \
+})
+
+/* Copy each token in wordlist delimited by space into word */
+#define foreach(word, wordlist, next) \
+ for (next = &wordlist[strspn(wordlist, " ")], \
+ strncpy(word, next, sizeof(word)), \
+ word[strcspn(word, " ")] = '\0', \
+ word[sizeof(word) - 1] = '\0', \
+ next = strchr(next, ' '); \
+ strlen(word); \
+ next = next ? &next[strspn(next, " ")] : "", \
+ strncpy(word, next, sizeof(word)), \
+ word[strcspn(word, " ")] = '\0', \
+ word[sizeof(word) - 1] = '\0', \
+ next = strchr(next, ' '))
+
+/* Return NUL instead of NULL if undefined */
+#define safe_getenv(s) (getenv(s) ? : "")
+
+/* Print directly to the console */
+#define cprintf(fmt, args...) do { \
+ FILE *fp = fopen("/dev/console", "w"); \
+ if (fp) { \
+ fprintf(fp, fmt, ## args); \
+ fclose(fp); \
+ } \
+} while (0)
+
+/* Debug print */
+#ifdef DEBUG
+#define dprintf(fmt, args...) cprintf("%s: " fmt, __FUNCTION__, ## args)
+#else
+#define dprintf(fmt, args...)
+#endif
+
+#ifdef vxworks
+
+#include <inetLib.h>
+#define inet_aton(a, n) ((inet_aton((a), (n)) == ERROR) ? 0 : 1)
+#define inet_ntoa(n) ({ char a[INET_ADDR_LEN]; inet_ntoa_b ((n), a); a; })
+
+#include <typedefs.h>
+#include <bcmutils.h>
+#define ether_atoe(a, e) bcm_ether_atoe((a), (e))
+#define ether_etoa(e, a) bcm_ether_ntoa((e), (a))
+
+/* These declarations are not available where you would expect them */
+extern int vsnprintf (char *, size_t, const char *, va_list);
+extern int snprintf(char *str, size_t count, const char *fmt, ...);
+extern char *strdup(const char *);
+extern char *strsep(char **stringp, char *delim);
+extern int strcasecmp(const char *s1, const char *s2);
+extern int strncasecmp(const char *s1, const char *s2, size_t n);
+
+/* Neither are socket() and connect() */
+#include <sockLib.h>
+
+#ifdef DEBUG
+#undef dprintf
+#define dprintf printf
+#endif
+#endif
+
+#endif /* _shutils_h_ */
projects / openwrt / svn-archive / archive.git / blobdiff