1 .\" $NetBSD: efun.3,v 1.8 2008/04/30 13:10:52 martin Exp $
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7 .\" by Christos Zoulas.
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45 .Nd error-checked utility functions
50 .Ft void (*)(int, const char *, ...)
51 .Fn esetfunc "void (*)(int, const char *, ...)"
53 .Fn easprintf "char ** restrict str" "const char * restrict fmt" "..."
55 .Fn efopen "const char *p" "const char *m"
57 .Fn ecalloc "size_t n" "size_t c"
59 .Fn emalloc "size_t n"
61 .Fn erealloc "void *p" "size_t n"
63 .Fn estrdup "const char *s"
65 .Fn estrndup "const char *s" "size_t len"
67 .Fn estrlcat "char *dst" "const char *src" "size_t len"
69 .Fn estrlcpy "char *dst" "const char *src" "size_t len"
71 .Fn evasprintf "char ** restrict str" "const char * restrict fmt" "..."
86 operate exactly as the corresponding functions that do not start with an
88 except that in case of an error, they call
89 the installed error handler that can be configured with
91 For the string handling functions, it is an error when the destination
92 buffer is not large enough to hold the complete string.
93 For functions that allocate memory or open a file, it is an error when
94 they would return a null pointer.
95 The default error handler is
99 returns the previous error handler function.
102 error handler will just call