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Fix a null-pointer dereference and a tautological check in cam_get_device
Reported by: Coverity CID: 1017964 MFC after: 3 weeks Sponsored by: Spectra Logic Corp Differential Revision: https://reviews.freebsd.org/D13184
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Notes:
svn2git
2020-12-20 02:59:44 +00:00
svn path=/head/; revision=326646
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@ -30,6 +30,7 @@ __FBSDID("$FreeBSD$");
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#include <sys/types.h>
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#include <sys/param.h>
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#include <assert.h>
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#include <stdio.h>
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#include <stdlib.h>
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#include <stdint.h>
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@ -132,6 +133,9 @@ cam_get_device(const char *path, char *dev_name, int devnamelen, int *unit)
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* it so we don't hose the user's string.
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*/
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newpath = (char *)strdup(path);
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if (newpath == NULL)
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return (-1);
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tmpstr = newpath;
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/*
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@ -140,8 +144,9 @@ cam_get_device(const char *path, char *dev_name, int devnamelen, int *unit)
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if (*tmpstr == '/') {
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tmpstr2 = tmpstr;
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tmpstr = strrchr(tmpstr2, '/');
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if ((tmpstr != NULL) && (*tmpstr != '\0'))
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tmpstr++;
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/* We know that tmpstr2 contains a '/', so strrchr can't fail */
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assert(tmpstr != NULL && *tmpstr != '\0');
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tmpstr++;
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}
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if (*tmpstr == '\0') {
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