svn commit: trunk/busybox/libbb

landley at busybox.net landley at busybox.net
Thu Sep 14 19:52:07 UTC 2006


Author: landley
Date: 2006-09-14 12:52:07 -0700 (Thu, 14 Sep 2006)
New Revision: 16124

Log:
Strangely, using // in the comments I added was not a persistent accident.


Modified:
   trunk/busybox/libbb/xfuncs.c


Changeset:
Modified: trunk/busybox/libbb/xfuncs.c
===================================================================
--- trunk/busybox/libbb/xfuncs.c	2006-09-14 17:03:18 UTC (rev 16123)
+++ trunk/busybox/libbb/xfuncs.c	2006-09-14 19:52:07 UTC (rev 16124)
@@ -21,7 +21,7 @@
  * included after these prototypes in libbb.h, all is well.
  */
 #ifdef L_xmalloc
-/* Die if we can't allocate size bytes of memory. */
+// Die if we can't allocate size bytes of memory.
 void *xmalloc(size_t size)
 {
 	void *ptr = malloc(size);
@@ -32,9 +32,9 @@
 #endif
 
 #ifdef L_xrealloc
-/* Die if we can't resize previously allocated memory.  (This returns a pointer
- * to the new memory, which may or may not be the same as the old memory.
- * It'll copy the contents to a new chunk and free the old one if necessary.) */
+// Die if we can't resize previously allocated memory.  (This returns a pointer
+// to the new memory, which may or may not be the same as the old memory.
+// It'll copy the contents to a new chunk and free the old one if necessary.)
 void *xrealloc(void *ptr, size_t size)
 {
 	ptr = realloc(ptr, size);
@@ -47,7 +47,7 @@
 
 
 #ifdef L_xzalloc
-/* Die if we can't allocate and zero size bytes of memory. */
+// Die if we can't allocate and zero size bytes of memory.
 void *xzalloc(size_t size)
 {
 	void *ptr = xmalloc(size);
@@ -57,7 +57,7 @@
 #endif
 
 #ifdef L_xstrdup
-/* Die if we can't copy a string to freshly allocated memory. */
+// Die if we can't copy a string to freshly allocated memory.
 char * xstrdup(const char *s)
 {
 	char *t;
@@ -75,9 +75,8 @@
 #endif
 
 #ifdef L_xstrndup
-/* Die if we can't allocate n+1 bytes (space for the null terminator) and copy
- * the (possibly truncated to length n) string into it.
- */
+// Die if we can't allocate n+1 bytes (space for the null terminator) and copy
+// the (possibly truncated to length n) string into it.
 char * xstrndup(const char *s, int n)
 {
 	char *t;
@@ -92,9 +91,8 @@
 #endif
 
 #ifdef L_xfopen
-/* Die if we can't open a file and return a FILE * to it.
- * Notice we haven't got xfread(), This is for use with fscanf() and friends.
- */
+// Die if we can't open a file and return a FILE * to it.
+// Notice we haven't got xfread(), This is for use with fscanf() and friends.
 FILE *xfopen(const char *path, const char *mode)
 {
 	FILE *fp;
@@ -105,7 +103,7 @@
 #endif
 
 #ifdef L_xopen
-/* Die if we can't open an existing file and return an fd. */
+// Die if we can't open an existing file and return an fd.
 int xopen(const char *pathname, int flags)
 {
 	if (ENABLE_DEBUG && (flags & O_CREAT))
@@ -116,7 +114,7 @@
 #endif
 
 #ifdef L_xopen3
-/* Die if we can't open a new file and return an fd. */
+// Die if we can't open a new file and return an fd.
 int xopen3(const char *pathname, int flags, int mode)
 {
 	int ret;
@@ -130,7 +128,7 @@
 #endif
 
 #ifdef L_xread
-/* Die with an error message if we can't read the entire buffer. */
+// Die with an error message if we can't read the entire buffer.
 void xread(int fd, void *buf, size_t count)
 {
 	while (count) {
@@ -145,7 +143,7 @@
 #endif
 
 #ifdef L_xwrite
-/* Die with an error message if we can't write the entire buffer. */
+// Die with an error message if we can't write the entire buffer.
 void xwrite(int fd, void *buf, size_t count)
 {
 	while (count) {
@@ -160,7 +158,7 @@
 #endif
 
 #ifdef L_xlseek
-/* Die with an error message if we can't lseek to the right spot. */
+// Die with an error message if we can't lseek to the right spot.
 void xlseek(int fd, off_t offset, int whence)
 {
 	if (offset != lseek(fd, offset, whence)) bb_error_msg_and_die("lseek");
@@ -168,7 +166,7 @@
 #endif
 
 #ifdef L_xread_char
-/* Die with an error message if we can't read one character. */
+// Die with an error message if we can't read one character.
 unsigned char xread_char(int fd)
 {
 	char tmp;
@@ -180,7 +178,7 @@
 #endif
 
 #ifdef L_xferror
-/* Die with supplied error message if this FILE * has ferror set. */
+// Die with supplied error message if this FILE * has ferror set.
 void xferror(FILE *fp, const char *fn)
 {
 	if (ferror(fp)) {
@@ -190,7 +188,7 @@
 #endif
 
 #ifdef L_xferror_stdout
-/* Die with an error message if stdout has ferror set. */
+// Die with an error message if stdout has ferror set.
 void xferror_stdout(void)
 {
 	xferror(stdout, bb_msg_standard_output);
@@ -198,7 +196,7 @@
 #endif
 
 #ifdef L_xfflush_stdout
-/* Die with an error message if we have trouble flushing stdout. */
+// Die with an error message if we have trouble flushing stdout.
 void xfflush_stdout(void)
 {
 	if (fflush(stdout)) {
@@ -208,25 +206,24 @@
 #endif
 
 #ifdef L_spawn
-/* This does a fork/exec in one call, using vfork().  Return PID of new child,
- * -1 for failure.  Runs argv[0], searching path if that has no / in it.
- */
+// This does a fork/exec in one call, using vfork().  Return PID of new child,
+// -1 for failure.  Runs argv[0], searching path if that has no / in it.
 pid_t spawn(char **argv)
 {
 	static int failed;
 	pid_t pid;
 	void *app = ENABLE_FEATURE_SH_STANDALONE_SHELL ? find_applet_by_name(argv[0]) : 0;
 
-	/* Be nice to nommu machines. */
+	// Be nice to nommu machines.
 	failed = 0;
 	pid = vfork();
 	if (pid < 0) return pid;
 	if (!pid) {
 		execvp(app ? CONFIG_BUSYBOX_EXEC_PATH : *argv, argv);
 
-		/* We're sharing a stack with blocked parent, let parent know we failed
-		 * and then exit to unblock parent (but don't run atexit() stuff, which
-		   would screw up parent.) */
+		// We're sharing a stack with blocked parent, let parent know we failed
+		// and then exit to unblock parent (but don't run atexit() stuff, which
+		// would screw up parent.)
 
 		failed = -1;
 		_exit(0);
@@ -236,7 +233,7 @@
 #endif
 
 #ifdef L_xspawn
-/* Die with an error message if we can't spawn a child process. */
+// Die with an error message if we can't spawn a child process.
 pid_t xspawn(char **argv)
 {
 	pid_t pid = spawn(argv);
@@ -246,7 +243,7 @@
 #endif
 
 #ifdef L_wait4
-/* Wait for the specified child PID to exit, returning child's error return. */
+// Wait for the specified child PID to exit, returning child's error return.
 int wait4pid(int pid)
 {
 	int status;
@@ -259,9 +256,9 @@
 #endif
 
 #ifdef L_itoa
-/* Convert unsigned integer to ascii, writing into supplied buffer.  A
- * truncated result is always null terminated (unless buflen is 0), and
- * contains the first few digits of the result ala strncpy. */
+// Convert unsigned integer to ascii, writing into supplied buffer.  A
+// truncated result is always null terminated (unless buflen is 0), and
+// contains the first few digits of the result ala strncpy.
 void utoa_to_buf(unsigned n, char *buf, unsigned buflen)
 {
 	int i, out = 0;
@@ -279,7 +276,7 @@
 	}
 }
 
-/* Convert signed integer to ascii, like utoa_to_buf() */
+// Convert signed integer to ascii, like utoa_to_buf()
 void itoa_to_buf(int n, char *buf, unsigned buflen)
 {
 	if (buflen && n<0) {
@@ -290,16 +287,16 @@
 	utoa_to_buf((unsigned)n, buf, buflen);
 }
 
-/* The following two functions use a static buffer, so calling either one a
- * second time will overwrite previous results.
- *
- * The largest 32 bit integer is -2 billion plus null terminator, or 12 bytes.
- * Int should always be 32 bits on any remotely Unix-like system, see
- * http://www.unix.org/whitepapers/64bit.html for the reasons why.
-*/
+// The following two functions use a static buffer, so calling either one a
+// second time will overwrite previous results.
+//
+// The largest 32 bit integer is -2 billion plus null terminator, or 12 bytes.
+// Int should always be 32 bits on any remotely Unix-like system, see
+// http://www.unix.org/whitepapers/64bit.html for the reasons why.
+
 static char local_buf[12];
 
-/* Convert unsigned integer to ascii using a static buffer (returned). */
+// Convert unsigned integer to ascii using a static buffer (returned).
 char *utoa(unsigned n)
 {
 	utoa_to_buf(n, local_buf, sizeof(local_buf));
@@ -307,7 +304,7 @@
 	return local_buf;
 }
 
-/* Convert signed integer to ascii using a static buffer (returned). */
+// Convert signed integer to ascii using a static buffer (returned).
 char *itoa(int n)
 {
 	itoa_to_buf(n, local_buf, sizeof(local_buf));
@@ -317,15 +314,15 @@
 #endif
 
 #ifdef L_setuid
-/* Die with an error message if we can't set gid.  (Because resource limits may
- * limit this user to a given number of processes, and if that fills up the
- * setgid() will fail and we'll _still_be_root_, which is bad.) */
+// Die with an error message if we can't set gid.  (Because resource limits may
+// limit this user to a given number of processes, and if that fills up the
+// setgid() will fail and we'll _still_be_root_, which is bad.)
 void xsetgid(gid_t gid)
 {
 	if (setgid(gid)) bb_error_msg_and_die("setgid");
 }
 
-/* Die with an error message if we cant' set uid.  (See xsetgid() for why.) */
+// Die with an error message if we cant' set uid.  (See xsetgid() for why.)
 void xsetuid(uid_t uid)
 {
 	if (setuid(uid)) bb_error_msg_and_die("setuid");
@@ -333,31 +330,31 @@
 #endif
 
 #ifdef L_fdlength
-/* Return how long the file at fd is, if there's any way to determine it. */
+// Return how long the file at fd is, if there's any way to determine it.
 off_t fdlength(int fd)
 {
 	off_t bottom = 0, top = 0, pos;
 	long size;
 
-	/* If the ioctl works for this, return it. */
+	// If the ioctl works for this, return it.
 
 	if (ioctl(fd, BLKGETSIZE, &size) >= 0) return size*512;
 
-	/* If not, do a binary search for the last location we can read.  (Some
-	 * block devices don't do BLKGETSIZE right.) */
+	// If not, do a binary search for the last location we can read.  (Some
+	// block devices don't do BLKGETSIZE right.)
 
 	do {
 		char temp;
 
 		pos = bottom + (top - bottom) / 2;
 
-		/* If we can read from the current location, it's bigger. */
+		// If we can read from the current location, it's bigger.
 
 		if (lseek(fd, pos, 0)>=0 && safe_read(fd, &temp, 1)==1) {
 			if (bottom == top) bottom = top = (top+1) * 2;
 			else bottom = pos;
 
-		/* If we can't, it's smaller. */
+		// If we can't, it's smaller.
 
 		} else {
 			if (bottom == top) {
@@ -373,8 +370,8 @@
 #endif
 
 #ifdef L_xasprintf
-/* Die with an error message if we can't malloc() enough space and do an
- * sprintf() into that space. */
+// Die with an error message if we can't malloc() enough space and do an
+// sprintf() into that space.
 char *xasprintf(const char *format, ...)
 {
 	va_list p;
@@ -403,8 +400,8 @@
 #endif
 
 #ifdef L_xprint_and_close_file
-/* Die with an error message if we can't copy an entire FILE * to stdout, then
- * close that file. */
+// Die with an error message if we can't copy an entire FILE * to stdout, then
+// close that file.
 void xprint_and_close_file(FILE *file)
 {
 	// copyfd outputs error messages for us.
@@ -416,7 +413,7 @@
 #endif
 
 #ifdef L_xchdir
-/* Die if we can't chdir to a new path. */
+// Die if we can't chdir to a new path.
 void xchdir(const char *path)
 {
 	if (chdir(path))
@@ -425,7 +422,7 @@
 #endif
 
 #ifdef L_warn_opendir
-/* Print a warning message if opendir() fails, but don't die. */
+// Print a warning message if opendir() fails, but don't die.
 DIR *warn_opendir(const char *path)
 {
 	DIR *dp;
@@ -439,7 +436,7 @@
 #endif
 
 #ifdef L_xopendir
-/* Die with an error message if opendir() fails. */
+// Die with an error message if opendir() fails.
 DIR *xopendir(const char *path)
 {
 	DIR *dp;
@@ -452,7 +449,7 @@
 
 #ifdef L_xdaemon
 #ifndef BB_NOMMU
-/* Die with an error message if we can't daemonize. */
+// Die with an error message if we can't daemonize.
 void xdaemon(int nochdir, int noclose)
 {
 	if (daemon(nochdir, noclose)) bb_perror_msg_and_die("daemon");
@@ -461,7 +458,7 @@
 #endif
 
 #ifdef L_xsocket
-/* Die with an error message if we can't open a new socket. */
+// Die with an error message if we can't open a new socket.
 int xsocket(int domain, int type, int protocol)
 {
 	int r = socket(domain, type, protocol);
@@ -473,7 +470,7 @@
 #endif
 
 #ifdef L_xbind
-/* Die with an error message if we can't bind a socket to an address. */
+// Die with an error message if we can't bind a socket to an address.
 void xbind(int sockfd, struct sockaddr *my_addr, socklen_t addrlen)
 {
 	if (bind(sockfd, my_addr, addrlen)) bb_perror_msg_and_die("bind");
@@ -481,7 +478,7 @@
 #endif
 
 #ifdef L_xlisten
-/* Die with an error message if we can't listen for connections on a socket. */
+// Die with an error message if we can't listen for connections on a socket.
 void xlisten(int s, int backlog)
 {
 	if (listen(s, backlog)) bb_perror_msg_and_die("listen");
@@ -489,7 +486,7 @@
 #endif
 
 #ifdef L_xstat
-/* xstat() - a stat() which dies on failure with meaningful error message */
+// xstat() - a stat() which dies on failure with meaningful error message
 void xstat(char *name, struct stat *stat_buf)
 {
         if (stat(name, stat_buf))




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