ripple/minitrace: replace read_mem_cstr calls with CString arguments

Change-Id: Ib8aec16cfca88db69765e7fa25aeaf8ea240f18d

1 files changed, 11 insertions, 13 deletions

diff --git a/ripple/minitrace/src/main.rs b/ripple/minitrace/src/main.rs
index 09b694c..0f1d278 100644
--- a/ripple/minitrace/src/main.rs
+++ b/ripple/minitrace/src/main.rs
@@ -278,16 +278,16 @@ define_syscalls! {
 		fn rt_sigaction(sig: i32, act: *const SigAction, oact: *mut SigAction, sigsetsize: usize) -> i64 = 13;
 		fn ioctl(fd: FileDesc, cmd: u32, arg: u64) -> i64 = 16;
 		fn pread64(fd: FileDesc, buf: *mut u8, count: usize, pos: u64) -> i64 = 17;
-		fn access(filename: *const u8, mode: i32) -> i64 = 21;
+		fn access(filename: CString, mode: i32) -> i64 = 21;
 		fn getcwd(buf: *mut u8, size: u64) -> i64 = 79;
-		fn readlink(path: *const u8, buf: *mut u8, bufsiz: i32) -> i64 = 89;
+		fn readlink(path: CString, buf: *mut u8, bufsiz: i32) -> i64 = 89;
 		fn sysinfo(info: *mut SysInfo) -> i64 = 99;
 		fn times(tbuf: *mut Tms) -> i64 = 100;
 		fn arch_prctl(option: i32, arg2: u64) -> i64 = 158;
 		fn set_tid_address(tidptr: *mut i32) -> i64 = 218;
 		fn exit_group(error_code: i32) -> i64 = 231;
-		fn openat(dfd: FileDesc, filename: *const u8, flags: OpenFlags, mode: u16) -> i64 = 257;
-		fn newfstatat(dfd: FileDesc, filename: *const u8, statbuf: *mut Stat, flags: i32) -> i64 = 262;
+		fn openat(dfd: FileDesc, filename: CString, flags: OpenFlags, mode: u16) -> i64 = 257;
+		fn newfstatat(dfd: FileDesc, filename: CString, statbuf: *mut Stat, flags: i32) -> i64 = 262;
 		fn set_robust_list(head: *mut RobustListHead, len: usize) -> i64 = 273;
 		fn prlimit64(pid: i32, resource: u32, new_rlim: *const RLimit64, old_rlim: *mut RLimit64) -> i64 = 302;
 		fn getrandom(ubuf: *mut u8, len: usize, flags: GrndFlags) -> i64 = 318;
@@ -411,16 +411,17 @@ fn check_syscall(process: &Process, entry: &SyscallEntry) -> bool {
 				_ => return false,
 			}
 		}
-		SyscallEntry::access { filename, mode: _ } => {
-			let filename = process.read_mem_cstr(filename as u64).unwrap();
+		SyscallEntry::access {
+			ref filename,
+			mode: _,
+		} => {
 			println!("access({filename:?}, ..)");
 		}
 		SyscallEntry::readlink {
-			path,
+			ref path,
 			buf: _,
 			bufsiz: _,
 		} => {
-			let path = process.read_mem_cstr(path as u64).unwrap();
 			println!("readlink({path:?}, ..)");
 		}
 		SyscallEntry::arch_prctl { option, arg2: _ } => {
@@ -435,7 +436,7 @@ fn check_syscall(process: &Process, entry: &SyscallEntry) -> bool {
 		}
 		SyscallEntry::openat {
 			dfd,
-			filename,
+			ref filename,
 			flags,
 			mode: _,
 		} => {
@@ -443,17 +444,14 @@ fn check_syscall(process: &Process, entry: &SyscallEntry) -> bool {
 				return false;
 			}
 
-			let filename = process.read_mem_cstr(filename as u64).unwrap();
-
 			println!("openat(AT_FDCWD, {filename:?}, {flags:?}, ..)");
 		}
 		SyscallEntry::newfstatat {
 			dfd,
-			filename,
+			ref filename,
 			statbuf: _,
 			flags: _,
 		} => {
-			let filename = process.read_mem_cstr(filename as u64).unwrap();
 			if dfd == AT_FDCWD {
 				println!("newfstatat(AT_FDCWD, {filename:?}, ..)");
 			} else if filename.as_bytes() == b"" {