libpayload: Add strerror

Change-Id: I33d45ad7d09473b8c6f5b7ee5fbadc0d184f9dcd
Signed-off-by: Stefan Tauner <stefan.tauner@gmx.at>
Reviewed-on: http://review.coreboot.org/3537
Tested-by: build bot (Jenkins)
Reviewed-by: Nico Huber <nico.huber@secunet.com>
This commit is contained in:
Stefan Tauner 2013-06-27 17:06:27 +02:00 committed by Nico Huber
parent c0b1a48cda
commit c9246da4dd
2 changed files with 17 additions and 2 deletions

View File

@ -63,8 +63,9 @@ char *strstr(const char *h, const char *n);
char *strsep(char **stringp, const char *delim);
size_t strspn(const char *s, const char *a);
size_t strcspn(const char *s, const char *a);
char* strtok(char *str, const char *delim);
char* strtok_r(char *str, const char *delim, char **ptr);
char *strtok(char *str, const char *delim);
char *strtok_r(char *str, const char *delim, char **ptr);
char *strerror(int errnum);
/** @} */
/**

View File

@ -639,3 +639,17 @@ void perror(const char *s)
{
printf("%s: %d\n", s?s:"(none)", errno);
}
/**
* Get a message string describing the given error number.
*
* @param errnum The error number to be interpreted
* @return A pointer to a string describing the given error number
*/
char *strerror(int errnum)
{
/* Reserve enough space for the string below + INT64_MIN in decimal + \0 */
static char errstr[35];
snprintf(errstr, sizeof(errstr), "Unknown error %d", errnum);
return errstr;
}