* 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);
#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);
#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);
#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;
#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;
#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;
#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))
#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;
#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) {
#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) {
#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");
#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;
#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)) {
#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);
#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)) {
#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);
#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);
#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;
#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;
}
}
-/* 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) {
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));
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));
#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");
#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) {
#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;
#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.
#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))
#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;
#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;
#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");
#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);
#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");
#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");
#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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