diff options
Diffstat (limited to 'src/H5.c')
| -rw-r--r-- | src/H5.c | 26 |
1 files changed, 22 insertions, 4 deletions
@@ -731,9 +731,13 @@ H5close(void) /* disable the code of HDsnprintf and HDvsnprintf below to see if they - * still needed by how what platforms. AKC 2005/8/11. + * are still needed by what platforms. AKC 2005/8/11. + * Turn it on for the Tflops (__PUMAGON__) machine. AKC 2005/8/12. + * The SN_SIZ_MIN is an attempt to require the minimum amount of space needed, + * hoping vsnprintf/snprintf do not print larger than it per request. */ -#if 0 +#ifdef __PUMAGON__ +#define H5_SN_SIZE_MIN 256 #ifndef H5_HAVE_SNPRINTF /*------------------------------------------------------------------------- * Function: HDsnprintf @@ -770,9 +774,15 @@ HDsnprintf(char *buf, size_t UNUSED size, const char *fmt, ...) int n; va_list ap; + if (size < H5_SN_SIZE_MIN) /* Not safe to call vsprintf */ + return -1; va_start(ap, fmt); n = HDvsprintf(buf, fmt, ap); va_end(ap); + if (n >= size){ + /* buffer overflow has occurred. Attempt to report an error. */ + return -1; + } return n; } #endif /* H5_HAVE_SNPRINTF */ @@ -807,10 +817,18 @@ HDsnprintf(char *buf, size_t UNUSED size, const char *fmt, ...) int HDvsnprintf(char *buf, size_t UNUSED size, const char *fmt, va_list ap) { - return HDvsprintf(buf, fmt, ap); + int n; + if (size < H5_SN_SIZE_MIN) /* Not safe to call vsprintf */ + return -1; + n = HDvsprintf(buf, fmt, ap); + if (n >= size){ + /* buffer overflow has occurred. Attempt to report an error. */ + return -1; + } + return n; } #endif /* H5_HAVE_VSNPRINTF */ -#endif /* 0 */ +#endif /* __PUMAGON__ */ /*------------------------------------------------------------------------- |