[Bug 214885] [patch] add missing system calls to truss

[bugzilla-noreply at freebsd.org]

https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=214885

--- Comment #2 from John Baldwin <jhb at FreeBSD.org> ---
What version is this against?  Several of the new system calls are already
handled in truss in stable/11:

> egrep '(openat|mkdirat|unlinkat|[lf]chmod|getdirentries|fstatat|pwrite|pipe2|pread|symlinkat)' syscalls.c
        { .name = "fchmod", .ret_type = 1, .nargs = 2,
        { .name = "fchmodat", .ret_type = 1, .nargs = 4,
        { .name = "fstatat", .ret_type = 1, .nargs = 4,
        { .name = "lchmod", .ret_type = 1, .nargs = 2,
        { .name = "mkdirat", .ret_type = 1, .nargs = 3,
        { .name = "openat", .ret_type = 1, .nargs = 4,
        { .name = "pipe2", .ret_type = 1, .nargs = 2,
        { .name = "symlinkat", .ret_type = 1, .nargs = 3,
        { .name = "unlinkat", .ret_type = 1, .nargs = 3,
                print_mask_arg(sysdecode_pipe2_flags, fp, args[sc->offset]);

In addition, due to the recent ptrace changes to return an accurate system call
argument count, system calls that accept no arguments or only plain integer
arguments (issetugid, dup, dup2, kqueue) should not need explicit descriptions
just to limit the number of arguments printed.

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