www/varnish-libvmod-fileserver: fix build on ARM / POWER

Fix build with unsigned char instead signed char:
133 |         iface.ifr_name[i] = c as i8;
    |         -----------------   ^^^^^^^ expected `u8`, found `i8`

(cherry picked from commit 7eb89cf86e)

www/varnish-libvmod-fileserver/files/patch-cargo-crates_varnish-0.0.12_src_vcl_convert.rs

@@ -0,0 +1,14 @@
+--- cargo-crates/varnish-0.0.12/src/vcl/convert.rs.orig	2023-01-08 01:32:37 UTC
++++ cargo-crates/varnish-0.0.12/src/vcl/convert.rs
+@@ -139,9 +139,9 @@ impl IntoVCL<VCL_STRING> for &[u8] {
+         // try to save some work if the buffer is already in the workspace
+         // and if it's followed by a null byte
+         if unsafe { varnish_sys::WS_Allocated(ws.raw, self.as_ptr() as *const c_void, self.len() as i64 + 1) == 1 && *self.as_ptr().add(self.len()) == b'\0' } {
+-            Ok(self.as_ptr() as *const i8)
++            Ok(self.as_ptr() as *const c_char)
+         } else {
+-            Ok(ws.copy_bytes_with_null(&self)?.as_ptr() as *const i8)
++            Ok(ws.copy_bytes_with_null(&self)?.as_ptr() as *const c_char)
+         }
+     }
+ }

www/varnish-libvmod-fileserver/files/patch-cargo-crates_varnish-0.0.12_src_vcl_ctx.rs

@@ -0,0 +1,38 @@
+--- cargo-crates/varnish-0.0.12/src/vcl/ctx.rs.orig	2023-01-08 01:41:36 UTC
++++ cargo-crates/varnish-0.0.12/src/vcl/ctx.rs
+@@ -4,6 +4,7 @@ use std::os::raw::{c_uint, c_void};
+ 
+ use crate::vcl::http::HTTP;
+ use crate::vcl::ws::{TestWS, WS};
++use std::os::raw::c_char;
+ use std::ptr;
+ use varnish_sys::{
+     busyobj, req, sess, vrt_ctx, vsb, vsl_log, ws, VSL_tag_e_SLT_Debug, VSL_tag_e_SLT_Error,
+@@ -103,7 +104,7 @@ impl<'a> Ctx<'a> {
+         // not great, we have to copy the string to add a null character
+         let c_cstring = CString::new(msg).unwrap();
+         unsafe {
+-            VRT_fail(self.raw, "%s\0".as_ptr() as *const i8, c_cstring.as_ptr());
++            VRT_fail(self.raw, "%s\0".as_ptr() as *const c_char, c_cstring.as_ptr());
+         }
+         0
+     }
+@@ -116,8 +117,8 @@ impl<'a> Ctx<'a> {
+                 log(logtag, msg);
+             } else {
+                 let t = varnish_sys::txt {
+-                    b: msg.as_ptr() as *const i8,
+-                    e: msg.as_ptr().add(msg.len()) as *const i8,
++                    b: msg.as_ptr() as *const c_char,
++                    e: msg.as_ptr().add(msg.len()) as *const c_char,
+                 };
+                 varnish_sys::VSLbt(p.vsl, logtag.into_u32(), t);
+ 
+@@ -245,6 +246,6 @@ impl Event {
+ pub fn log(logtag: LogTag, msg: &str) {
+     unsafe {
+         let c_cstring = CString::new(msg).unwrap();
+-        varnish_sys::VSL(logtag.into_u32(), 0, b"%s\0".as_ptr() as *const i8, c_cstring.as_ptr() as *const u8);
++        varnish_sys::VSL(logtag.into_u32(), 0, b"%s\0".as_ptr() as *const c_char, c_cstring.as_ptr() as *const u8);
+     }
+ }

www/varnish-libvmod-fileserver/files/patch-cargo-crates_varnish-0.0.12_src_vcl_http.rs

@@ -0,0 +1,23 @@
+--- cargo-crates/varnish-0.0.12/src/vcl/http.rs.orig	2023-01-08 02:38:57 UTC
++++ cargo-crates/varnish-0.0.12/src/vcl/http.rs
+@@ -12,7 +12,7 @@
+ //! this [issue](https://github.com/gquintard/varnish-rs/issues/4).
+ 
+ #![allow(clippy::not_unsafe_ptr_arg_deref)]
+-use std::os::raw::c_uint;
++use std::os::raw::{c_char, c_uint};
+ use std::slice::{from_raw_parts, from_raw_parts_mut};
+ use std::str::from_utf8;
+ 
+@@ -53,9 +53,9 @@ impl<'a> HTTP<'a> {
+         let hdr_buf = ws.copy_bytes_with_null(&value)?;
+         unsafe {
+             let mut hd = self.raw.hd.offset(idx as isize);
+-            (*hd).b = hdr_buf.as_ptr() as *const i8;
++            (*hd).b = hdr_buf.as_ptr() as *const c_char;
+             /* -1 accounts for the null character */
+-            (*hd).e = hdr_buf.as_ptr().add(hdr_buf.len() - 1) as *const i8;
++            (*hd).e = hdr_buf.as_ptr().add(hdr_buf.len() - 1) as *const c_char;
+             let hdf = self.raw.hdf.offset(idx as isize);
+             *hdf = 0;
+         }

www/varnish-libvmod-fileserver/files/patch-cargo-crates_varnish-0.0.12_src_vcl_processor.rs

@@ -0,0 +1,28 @@
+--- cargo-crates/varnish-0.0.12/src/vcl/processor.rs.orig	2023-01-08 02:45:31 UTC
++++ cargo-crates/varnish-0.0.12/src/vcl/processor.rs
+@@ -5,6 +5,7 @@
+ //! *Note:* The rust wrapper here is pretty thin and the vmod writer will most probably need to have to
+ //! deal with the raw Varnish internals.
+ 
++use std::os::raw::c_char;
+ use std::os::raw::c_int;
+ use std::os::raw::c_void;
+ use std::ptr;
+@@ -129,7 +130,7 @@ pub unsafe extern "C" fn gen_vdp_push<T: VDP>(
+ /// Create a `varnish_sys::vdp` that can be fed to `varnish_sys::VRT_AddVDP`
+ pub fn new_vdp<T: VDP>() -> varnish_sys::vdp {
+     varnish_sys::vdp {
+-        name: T::name().as_ptr() as *const i8,
++        name: T::name().as_ptr() as *const c_char,
+         init: Some(gen_vdp_init::<T>),
+         bytes: Some(gen_vdp_push::<T>),
+         fini: Some(gen_vdp_fini::<T>),
+@@ -246,7 +247,7 @@ pub unsafe extern "C" fn wrap_vfp_fini<T: VFP>(ctxp: *
+ /// Create a `varnish_sys::vfp` that can be fed to `varnish_sys::VRT_AddVFP`
+ pub fn new_vfp<T: VFP>() -> varnish_sys::vfp {
+     varnish_sys::vfp {
+-        name: T::name().as_ptr() as *const i8,
++        name: T::name().as_ptr() as *const c_char,
+         init: Some(wrap_vfp_init::<T>),
+         pull: Some(wrap_vfp_pull::<T>),
+         fini: Some(wrap_vfp_fini::<T>),

www/varnish-libvmod-fileserver/files/patch-cargo-crates_varnish-0.0.12_src_vcl_ws.rs

@@ -0,0 +1,28 @@
+--- cargo-crates/varnish-0.0.12/src/vcl/ws.rs.orig	2023-01-08 02:53:56 UTC
++++ cargo-crates/varnish-0.0.12/src/vcl/ws.rs
+@@ -10,6 +10,7 @@
+ //! **Note:** unless you know what you are doing, you should probably just use the automatic type
+ //! conversion provided by [`crate::vcl::convert`], or store things in
+ //! [`crate::vcl::vpriv::VPriv`].
++use std::os::raw::c_char;
+ use std::ffi::c_void;
+ use std::ptr;
+ use std::slice::from_raw_parts_mut;
+@@ -213,7 +214,7 @@ impl<'a> Drop for ReservedBuf<'a> {
+ pub struct TestWS {
+     c_ws: varnish_sys::ws,
+     #[allow(dead_code)]
+-    space: Vec<i8>,
++    space: Vec<c_char>,
+ }
+ 
+ impl TestWS {
+@@ -229,7 +230,7 @@ impl TestWS {
+         TestWS {
+             c_ws: varnish_sys::ws {
+                 magic: varnish_sys::WS_MAGIC,
+-                id: ['t' as i8, 's' as i8, 't' as i8, '\0' as i8],
++                id: ['t' as c_char, 's' as c_char, 't' as c_char, '\0' as c_char],
+                 s,
+                 f: s,
+                 r: ptr::null_mut(),

www/varnish-libvmod-fileserver/files/patch-src_lib.rs

@@ -0,0 +1,38 @@
+--- src/lib.rs.orig	2023-01-08 03:03:24 UTC
++++ src/lib.rs
+@@ -5,7 +5,7 @@ use std::collections::HashMap;
+ use std::collections::hash_map::DefaultHasher;
+ use std::hash::{Hash, Hasher};
+ use std::io::{BufRead, BufReader, Read};
+-use std::os::raw::{c_uint, c_void};
++use std::os::raw::{c_char, c_uint, c_void};
+ use std::os::unix::fs::MetadataExt;
+ use std::ptr;
+ 
+@@ -113,7 +113,7 @@ impl root {
+                 ctx.raw,
+                 &METHODS.methods,
+                 info_ptr as *mut std::ffi::c_void,
+-                format!("{}\0", vcl_name).as_ptr() as *const i8,
++                format!("{}\0", vcl_name).as_ptr() as *const c_char,
+             )
+         };
+ 
+@@ -170,7 +170,7 @@ struct VfpWrapper {
+ }
+ static FILE_VFP: VfpWrapper = VfpWrapper {
+     vfp: varnish_sys::vfp {
+-        name: "fileserver\0".as_ptr() as *const i8,
++        name: "fileserver\0".as_ptr() as *const c_char,
+         init: None,
+         pull: Some(varnish::vcl::processor::wrap_vfp_pull::<BackendResp>),
+         fini: Some(varnish::vcl::processor::wrap_vfp_fini::<BackendResp>),
+@@ -233,7 +233,7 @@ unsafe extern "C" fn be_gethdrs(
+         );
+ 
+         if (*bo.req).req_body_status != varnish_sys::BS_CACHED.as_ptr() {
+-            bo.no_retry = "req.body not cached\0".as_ptr() as *const i8;
++            bo.no_retry = "req.body not cached\0".as_ptr() as *const c_char;
+         }
+ 
+         if (*bo.req).req_body_status == varnish_sys::BS_ERROR.as_ptr() {