unveil(2) mentions the errors that errno will be set to upon failure;
however it is missing ENOTDIR.
Example C program that shows such an error under the assumption
that /home/zack/foo is a file that exists:
---------------------------------------------------------------
#include <errno.h>
#include <stdio.h>
#include <unistd.h>
int main()
{
int val = unveil("/home/zack/foo/", "r");
if (val < 0) {
if (errno == ENOTDIR) {
printf("ENOTDIR\n");
}
}
return 0;
}
---------------------------------------------------------------
Adding something like
.It Bq Er ENOTDIR
.Fa path
points to a file that is not a directory.
to lib/libc/sys/unveil.2 should suffice.
