Commit e3e19052 authored by Willy Tarreau's avatar Willy Tarreau Committed by Paul E. McKenney
Browse files

tools/nolibc/stdio: add fwrite() to stdio 



We'll use it to write substrings. It relies on a simpler _fwrite() that
only takes one size. fputs() was also modified to rely on it.

Signed-off-by: default avatarWilly Tarreau <w@1wt.eu>
Signed-off-by: default avatarPaul E. McKenney <paulmck@kernel.org>
parent 99b037cb

tools/include/nolibc/stdio.h

+28 −7
Original line number Diff line number Diff line
@@ -84,12 +84,14 @@ int putchar(int c) 
}





/* puts(), fputs(). Note that puts() emits '\n' but not fputs(). */

/* fwrite(), puts(), fputs(). Note that puts() emits '\n' but not fputs(). */



/* internal fwrite()-like function which only takes a size and returns 0 on

 * success or EOF on error. It automatically retries on short writes.

 */

static __attribute__((unused))

int fputs(const char *s, FILE *stream)

int _fwrite(const void *buf, size_t size, FILE *stream)

{

	size_t len = strlen(s);

	ssize_t ret;

	int fd;
@@ -98,16 +100,35 @@ int fputs(const char *s, FILE *stream) 


	fd = 3 + (long)stream;



	while (len > 0) {

		ret = write(fd, s, len);

	while (size) {

		ret = write(fd, buf, size);

		if (ret <= 0)

			return EOF;

		s += ret;

		len -= ret;

		size -= ret;

		buf += ret;

	}

	return 0;

}



static __attribute__((unused))

size_t fwrite(const void *s, size_t size, size_t nmemb, FILE *stream)

{

	size_t written;



	for (written = 0; written < nmemb; written++) {

		if (_fwrite(s, size, stream) != 0)

			break;

		s += size;

	}

	return written;

}



static __attribute__((unused))

int fputs(const char *s, FILE *stream)

{

	return _fwrite(s, strlen(s), stream);

}



static __attribute__((unused))

int puts(const char *s)

{