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home | helpEFUN(3) BSD Library Functions Manual EFUN(3) NAME esetfunc, easprintf, efopen, emalloc, ecalloc, erealloc, estrdup, estrndup, estrlcat, estrlcpy, evasprintf -- error-checked utility functions LIBRARY System Utilities Library (libutil, -lutil) SYNOPSIS #include <util.h> void (*)(int, const char *, ...) esetfunc(void (*)(int, const char *, ...)); int easprintf(char ** restrict str, const char * restrict fmt, ...); FILE * efopen(const char *p, const char *m); void * ecalloc(size_t n, size_t c); void * emalloc(size_t n); void * erealloc(void *p, size_t n); char * estrdup(const char *s); char * estrndup(const char *s, size_t len); size_t estrlcat(char *dst, const char *src, size_t len); size_t estrlcpy(char *dst, const char *src, size_t len); int evasprintf(char ** restrict str, const char * restrict fmt, ...); DESCRIPTION The easprintf(), efopen(), ecalloc(), emalloc(), erealloc(), estrdup(), estrndup(), estrlcat(), estrlcpy(), and evasprintf() functions operate exactly as the corresponding functions that do not start with an 'e' except that in case of an error, they call the installed error handler that can be configured with esetfunc(). For the string handling functions, it is an error when the destination buffer is not large enough to hold the complete string. For functions that allocate memory or open a file, it is an error when they would return a null pointer. The default error handler is err(3). The function esetfunc() returns the previous error handler function. A NULL error handler will just call exit(3). SEE ALSO asprintf(3), calloc(3), err(3), exit(3), fopen(3), malloc(3), realloc(3), strdup(3), strlcat(3), strlcpy(3), strndup(3), vasprintf(3) BSD May 3, 2010 BSD
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