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Add snprlcat() and vsnprlcat() - the functions I'm always missing.

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They work as a combination of snprintf(3) and strlcat(3) - the caller
can append a string build based on the given format.

MFC after:	1 week
This commit is contained in:
Pawel Jakub Dawidek 2011-03-21 08:36:50 +00:00
parent 4f0ec4797a
commit 9925a680a9
Notes: svn2git 2020-12-20 02:59:44 +00:00 
svn path=/head/; revision=219815
2 changed files with 27 additions and 0 deletions
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24
sbin/hastd/subr.c
View File

@ -38,6 +38,9 @@ __FBSDID("$FreeBSD$");
#include <errno.h>
#include <fcntl.h>
#include <pwd.h>
#include <stdarg.h>
#include <stdio.h>
#include <string.h>
#include <unistd.h>
#include <pjdlog.h>
@ -45,6 +48,27 @@ __FBSDID("$FreeBSD$");
#include "hast.h"
#include "subr.h"
int
vsnprlcat(char *str, size_t size, const char *fmt, va_list ap)
{
size_t len;
len = strlen(str);
return (vsnprintf(str + len, size - len, fmt, ap));
}
int
snprlcat(char *str, size_t size, const char *fmt, ...)
{
va_list ap;
int result;
va_start(ap, fmt);
result = vsnprlcat(str, size, fmt, ap);
va_end(ap);
return (result);
}
int
provinfo(struct hast_resource *res, bool dowrite)
{

3
sbin/hastd/subr.h
View File

@ -45,6 +45,9 @@
errno = _rerrno; \
} while (0)
int vsnprlcat(char *str, size_t size, const char *fmt, va_list ap);
int snprlcat(char *str, size_t size, const char *fmt, ...);
int provinfo(struct hast_resource *res, bool dowrite);
const char *role2str(int role);
int drop_privs(void);