Aren/NetBSD
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Check for fwrite(3) error returns, and exit with an error message,

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instead of silently failing.
This commit is contained in:
dyoung 2006-08-13 00:19:30 +00:00
parent 1aabccbafc
commit 4329d94fb4
1 changed files with 8 additions and 4 deletions
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12
usr.sbin/kgmon/kgmon.c
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@ -1,4 +1,4 @@
/* $NetBSD: kgmon.c,v 1.18 2006/05/25 00:07:59 christos Exp $ */
/* $NetBSD: kgmon.c,v 1.19 2006/08/13 00:19:30 dyoung Exp $ */
/*
* Copyright (c) 1983, 1992, 1993
@ -39,7 +39,7 @@ __COPYRIGHT("@(#) Copyright (c) 1983, 1992, 1993\n\
#if 0
static char sccsid[] = "from: @(#)kgmon.c 8.1 (Berkeley) 6/6/93";
#else
__RCSID("$NetBSD: kgmon.c,v 1.18 2006/05/25 00:07:59 christos Exp $");
__RCSID("$NetBSD: kgmon.c,v 1.19 2006/08/13 00:19:30 dyoung Exp $");
#endif
#endif /* not lint */
@ -320,7 +320,8 @@ dumpstate(struct kvmvars *kvp)
h.ncnt = kvp->gpm.kcountsize + sizeof(h);
h.version = GMONVERSION;
h.profrate = getprofhz(kvp);
fwrite((char *)&h, sizeof(h), 1, fp);
if (fwrite((char *)&h, sizeof(h), 1, fp) != 1)
err(EXIT_FAILURE, "writing header to gmon.out");
/*
* Write out the tick buffer.
@ -398,7 +399,10 @@ dumpstate(struct kvmvars *kvp)
rawarc.raw_frompc = frompc;
rawarc.raw_selfpc = (u_long)tos[toindex].selfpc;
rawarc.raw_count = tos[toindex].count;
fwrite((char *)&rawarc, sizeof(rawarc), 1, fp);
if (fwrite((char *)&rawarc, sizeof(rawarc), 1,fp) != 1){
err(EXIT_FAILURE,
"writing raw arc to gmon.out");
}
}
}
free(tos);