Author: ngie
Date: Thu Mar 23 04:50:44 2017
New Revision: 315785
URL: https://svnweb.freebsd.org/changeset/base/315785
Log:
MFC r315360:
Return NULL instead of 0 on failure in _kvm_open, kvm_open{,2,files}
This is being done for the following reasons:
- kvm_open(3), etc says they will return NULL.
- NULL by definition is (void*)0 per POSIX, but can be redefined,
depending on the compiler, etc.
Modified:
stable/11/lib/libkvm/kvm.c
Directory Properties:
stable/11/ (props changed)
Modified: stable/11/lib/libkvm/kvm.c
==============================================================================
--- stable/11/lib/libkvm/kvm.c Thu Mar 23 04:50:38 2017 (r315784)
+++ stable/11/lib/libkvm/kvm.c Thu Mar 23 04:50:44 2017 (r315785)
@@ -479,7 +479,7 @@ failed:
if (errout != NULL)
strlcpy(errout, kd->errbuf, _POSIX2_LINE_MAX);
(void)kvm_close(kd);
- return (0);
+ return (NULL);
}
kvm_t *
@@ -492,7 +492,7 @@ kvm_openfiles(const char *uf, const char
if (errout != NULL)
(void)strlcpy(errout, strerror(errno),
_POSIX2_LINE_MAX);
- return (0);
+ return (NULL);
}
return (_kvm_open(kd, uf, mf, flag, errout));
}
@@ -507,7 +507,7 @@ kvm_open(const char *uf, const char *mf,
if (errstr != NULL)
(void)fprintf(stderr, "%s: %s\n",
errstr, strerror(errno));
- return (0);
+ return (NULL);
}
kd->program = errstr;
return (_kvm_open(kd, uf, mf, flag, NULL));
@@ -523,7 +523,7 @@ kvm_open2(const char *uf, const char *mf
if (errout != NULL)
(void)strlcpy(errout, strerror(errno),
_POSIX2_LINE_MAX);
- return (0);
+ return (NULL);
}
kd->resolve_symbol = resolver;
return (_kvm_open(kd, uf, mf, flag, errout));
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