projects / authen-passphrase-scrypt.git / blame
| Commit | Line | Data |
|---|---|---|
| 0c1f3509 MG |
1 | #ifndef _WARNP_H_ |
| 2 | #define _WARNP_H_ | |
| 3 | ||
| 4 | #include <errno.h> | |
| 5 | #include <stddef.h> | |
| 6 | ||
| 7 | /* Avoid namespace collisions with BSD <err.h>. */ | |
| 8 | #define warn libcperciva_warn | |
| 9 | #define warnx libcperciva_warnx | |
| 10 | ||
| 11 | /** | |
| 12 | * warnp_setprogname(progname): | |
| 13 | * Set the program name to be used by warn() and warnx() to ${progname}. | |
| 14 | */ | |
| 15 | void warnp_setprogname(const char *); | |
| 16 | #define WARNP_INIT do { \ | |
| 17 | if (argv[0] != NULL) \ | |
| 18 | warnp_setprogname(argv[0]); \ | |
| 19 | } while (0) | |
| 20 | ||
| 21 | /* As in BSD <err.h>. */ | |
| 22 | void warn(const char *, ...); | |
| 23 | void warnx(const char *, ...); | |
| 24 | ||
| 25 | /* | |
| 26 | * If compiled with DEBUG defined, print __FILE__ and __LINE__. | |
| 27 | */ | |
| 28 | #ifdef DEBUG | |
| 29 | #define warnline do { \ | |
| 30 | warnx("%s, %d", __FILE__, __LINE__); \ | |
| 31 | } while (0) | |
| 32 | #else | |
| 33 | #define warnline | |
| 34 | #endif | |
| 35 | ||
| 36 | /* | |
| 37 | * Call warn(3) or warnx(3) depending upon whether errno == 0; and clear | |
| 38 | * errno (so that the standard error message isn't repeated later). | |
| 39 | */ | |
| 40 | #define warnp(...) do { \ | |
| 41 | warnline; \ | |
| 42 | if (errno != 0) { \ | |
| 43 | warn(__VA_ARGS__); \ | |
| 44 | errno = 0; \ | |
| 45 | } else \ | |
| 46 | warnx(__VA_ARGS__); \ | |
| 47 | } while (0) | |
| 48 | ||
| 49 | /* | |
| 50 | * Call warnx(3) and set errno == 0. Unlike warnp, this should be used | |
| 51 | * in cases where we're reporting a problem which we discover ourselves | |
| 52 | * rather than one which is reported to us from a library or the kernel. | |
| 53 | */ | |
| 54 | #define warn0(...) do { \ | |
| 55 | warnline; \ | |
| 56 | warnx(__VA_ARGS__); \ | |
| 57 | errno = 0; \ | |
| 58 | } while (0) | |
| 59 | ||
| 60 | #endif /* !_WARNP_H_ */ |