diff options
Diffstat (limited to 'contrib/top/utils.c')
| -rw-r--r-- | contrib/top/utils.c | 30 |
1 files changed, 25 insertions, 5 deletions
diff --git a/contrib/top/utils.c b/contrib/top/utils.c index 94233de..906170a 100644 --- a/contrib/top/utils.c +++ b/contrib/top/utils.c @@ -7,6 +7,8 @@ * * Copyright (c) 1984, 1989, William LeFebvre, Rice University * Copyright (c) 1989, 1990, 1992, William LeFebvre, Northwestern University + * + * $FreeBSD$ */ /* @@ -324,24 +326,42 @@ long *diffs; /* * errmsg(errnum) - return an error message string appropriate to the * error number "errnum". This is a substitute for the System V - * function "strerror" with one important difference: the string - * returned by this function does NOT end in a newline! - * N.B.: there appears to be no reliable way to determine if - * "strerror" exists at compile time, so I make do by providing - * something of similar functionality. + * function "strerror". There appears to be no reliable way to + * determine if "strerror" exists at compile time, so I make do + * by providing something of similar functionality. For those + * systems that have strerror and NOT errlist, define + * -DHAVE_STRERROR in the module file and this function will + * use strerror. */ /* externs referenced by errmsg */ +#ifndef HAVE_STRERROR +#ifndef SYS_ERRLIST_DECLARED +#define SYS_ERRLIST_DECLARED +extern char *sys_errlist[]; +#endif + +extern int sys_nerr; +#endif + char *errmsg(errnum) int errnum; { +#ifdef HAVE_STRERROR + char *msg = strerror(errnum); + if (msg != NULL) + { + return msg; + } +#else if (errnum > 0 && errnum < sys_nerr) { return((char *)sys_errlist[errnum]); } +#endif return("No error"); } |
