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libstore: return ENOTSUP for getxattr functions #11206

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Merged
edolstra merged 1 commit into from
Jul 29, 2024
Merged

libstore: return ENOTSUP for getxattr functions #11206

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7 changes: 5 additions & 2 deletions src/libstore/unix/build/local-derivation-goal.cc
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Original file line number Diff line number Diff line change
Expand Up @@ -1702,10 +1702,13 @@ void setupSeccomp()
throw SysError("unable to add seccomp rule");
}

/* Prevent builders from creating EAs or ACLs. Not all filesystems
/* Prevent builders from using EAs or ACLs. Not all filesystems
support these, and they're not allowed in the Nix store because
they're not representable in the NAR serialisation. */
if (seccomp_rule_add(ctx, SCMP_ACT_ERRNO(ENOTSUP), SCMP_SYS(setxattr), 0) != 0 ||
if (seccomp_rule_add(ctx, SCMP_ACT_ERRNO(ENOTSUP), SCMP_SYS(getxattr), 0) != 0 ||
seccomp_rule_add(ctx, SCMP_ACT_ERRNO(ENOTSUP), SCMP_SYS(lgetxattr), 0) != 0 ||
seccomp_rule_add(ctx, SCMP_ACT_ERRNO(ENOTSUP), SCMP_SYS(fgetxattr), 0) != 0 ||
seccomp_rule_add(ctx, SCMP_ACT_ERRNO(ENOTSUP), SCMP_SYS(setxattr), 0) != 0 ||
seccomp_rule_add(ctx, SCMP_ACT_ERRNO(ENOTSUP), SCMP_SYS(lsetxattr), 0) != 0 ||
seccomp_rule_add(ctx, SCMP_ACT_ERRNO(ENOTSUP), SCMP_SYS(fsetxattr), 0) != 0)
throw SysError("unable to add seccomp rule");
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