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ram_fs: check symlink writes for termination bytes

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Ref #2461
This commit is contained in:
Emery Hemingway 2017-07-10 08:17:18 -05:00 committed by Christian Helmuth
parent 0743ea87ed
commit cfdac3f4c3
1 changed files with 12 additions and 3 deletions
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15
repos/os/src/server/ram_fs/symlink.h
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@ -43,9 +43,18 @@ class Ram_fs::Symlink : public Node
/* Ideal symlink operations are atomic. */ /* Ideal symlink operations are atomic. */
if (seek_offset) return 0; if (seek_offset) return 0;
_len = min(len, sizeof(_link_to)); len = min(len, sizeof(_link_to));
Genode::memcpy(_link_to, src, _len);
return _len; for (size_t i = 0; i < len; ++i) {
if (src[i] == '\0') {
len = i;
break;
}
}
Genode::memcpy(_link_to, src, len);
_len = len;
return len;
} }
Status status() override Status status() override