Mercurial > dropbear
changeset 1934:83b6a47759a8
Add m_snprintf() that won't return negative
| author | Matt Johnston <matt@ucc.asn.au> |
|---|---|
| date | Fri, 01 Apr 2022 12:10:48 +0800 |
| parents | e093ddc5b585 |
| children | a7ad060707b6 |
| files | dbutil.c dbutil.h |
| diffstat | 2 files changed, 15 insertions(+), 0 deletions(-) [+] |
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--- a/dbutil.c Fri Apr 01 11:56:10 2022 +0800 +++ b/dbutil.c Fri Apr 01 12:10:48 2022 +0800 @@ -771,3 +771,16 @@ return FD_ISSET(fd, &fds); } } + +int m_snprintf(char *str, size_t size, const char *format, ...) { + va_list param; + int ret; + + va_start(param, format); + ret = vsnprintf(str, size, format, param); + va_end(param); + if (ret < 0) { + dropbear_exit("snprintf failed"); + } + return ret; +}
--- a/dbutil.h Fri Apr 01 11:56:10 2022 +0800 +++ b/dbutil.h Fri Apr 01 12:10:48 2022 +0800 @@ -73,6 +73,8 @@ void setnonblocking(int fd); void disallow_core(void); int m_str_to_uint(const char* str, unsigned int *val); +/* The same as snprintf() but exits rather than returning negative */ +int m_snprintf(char *str, size_t size, const char *format, ...); /* Used to force mp_ints to be initialised */ #define DEF_MP_INT(X) mp_int X = {0, 0, 0, NULL}