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Check the return value of tsleep() in snpread(). This may be

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important, since our sleep is interruptable (PCATCH flag).

PR:		30985
Discovered by:	Vladimir Jakovenko <vovik@lucky.net>
Submitted by:	Valentin Nechayev <netch@segfault.kiev.ua>
This commit is contained in:
Dima Dorfman 2001-11-24 15:59:46 +00:00
parent 3278021b94
commit 2c1a6f2178
Notes: svn2git 2020-12-20 02:59:44 +00:00 
svn path=/head/; revision=86861
1 changed files with 4 additions and 1 deletions
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5
sys/dev/snp/snp.c
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@ -256,7 +256,10 @@ snpread(dev, uio, flag)
if (flag & IO_NDELAY)
return (EWOULDBLOCK);
snp->snp_flags |= SNOOP_RWAIT;
tsleep((caddr_t)snp, (PZERO + 1) | PCATCH, "snprd", 0);
error = tsleep((caddr_t)snp, (PZERO + 1) | PCATCH,
"snprd", 0);
if (error != 0)
return (error);
}
} while (snp->snp_len == 0);