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c_types: handle errors from getgroups()/getgrouplist()

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This commit is contained in:
Michael Gehring 2014-06-16 21:05:39 +02:00
parent d24327b243
commit d22be16932
1 changed files with 4 additions and 0 deletions
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4
common/c_types.rs
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@ -13,6 +13,7 @@ use self::libc::funcs::posix88::unistd::getgroups;
use std::vec::Vec; use std::vec::Vec;
use std::io::IoError;
use std::ptr::read; use std::ptr::read;
use std::str::raw::from_c_str; use std::str::raw::from_c_str;
@ -138,6 +139,9 @@ pub fn group(possible_pw: Option<c_passwd>, nflag: bool) {
}; };
} }
if ngroups < 0 {
crash!(1, "{}", IoError::last_error());
}
unsafe { groups.set_len(ngroups as uint) }; unsafe { groups.set_len(ngroups as uint) };