Add more of the printf() functions.
Signed-off-by: Thomas Weißschuh thomas.weissschuh@linutronix.de Acked-by: Willy Tarreau w@1wt.eu --- tools/include/nolibc/stdio.h | 55 ++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 55 insertions(+)
diff --git a/tools/include/nolibc/stdio.h b/tools/include/nolibc/stdio.h index b17b473bd8751a6283309178b4848e61e1683305..46bd90f96d654fadda20292baddc98358a3afc62 100644 --- a/tools/include/nolibc/stdio.h +++ b/tools/include/nolibc/stdio.h @@ -389,6 +389,61 @@ int dprintf(int fd, const char *fmt, ...) va_start(args, fmt); ret = vdprintf(fd, fmt, args); va_end(args); + + return ret; +} + +static int __nolibc_sprintf_cb(intptr_t _state, const char *buf, size_t size) +{ + char **state = (char **)_state; + + memcpy(*state, buf, size); + *state += size; + return 0; +} + +static __attribute__((unused, format(printf, 3, 0))) +int vsnprintf(char *buf, size_t size, const char *fmt, va_list args) +{ + char *state = buf; + int ret; + + ret = __nolibc_printf(__nolibc_sprintf_cb, (intptr_t)&state, size, fmt, args); + if (ret < 0) + return ret; + buf[(size_t)ret < size ? (size_t)ret : size - 1] = '\0'; + return ret; +} + +static __attribute__((unused, format(printf, 3, 4))) +int snprintf(char *buf, size_t size, const char *fmt, ...) +{ + va_list args; + int ret; + + va_start(args, fmt); + ret = vsnprintf(buf, size, fmt, args); + va_end(args); + + return ret; +} + +static __attribute__((unused, format(printf, 2, 0))) +int vsprintf(char *buf, const char *fmt, va_list args) +{ + return vsnprintf(buf, SIZE_MAX, fmt, args); +} + +static __attribute__((unused, format(printf, 2, 3))) +int sprintf(char *buf, const char *fmt, ...) +{ + va_list args; + int ret; + + va_start(args, fmt); + ret = vsprintf(buf, fmt, args); + va_end(args); + return ret; }