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Check number of arguments before trying to read arg0. This prevents access

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to arg0 and dumping core when `gpart bootcode` called without arguments.
This commit is contained in:
Andrey V. Elsukov 2010-12-21 17:24:32 +00:00
parent d26b794591
commit 5c98f5b0da
Notes: svn2git 2020-12-20 02:59:44 +00:00 
svn path=/head/; revision=216619
1 changed files with 2 additions and 0 deletions
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sbin/geom/class/part/geom_part.c
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@ -1133,6 +1133,8 @@ gpart_bootcode(struct gctl_req *req, unsigned int fl)
geom_deletetree(&mesh);
errx(EXIT_FAILURE, "Class %s not found.", s);
}
if (gctl_get_int(req, "nargs") != 1)
errx(EXIT_FAILURE, "Invalid number of arguments.");
s = gctl_get_ascii(req, "arg0");
if (s == NULL)
abort();