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-rw-r--r--src/io/io-ptrace.c82
1 files changed, 0 insertions, 82 deletions
diff --git a/src/io/io-ptrace.c b/src/io/io-ptrace.c
deleted file mode 100644
index 50d0766..0000000
--- a/src/io/io-ptrace.c
+++ /dev/null
@@ -1,82 +0,0 @@
-#include "io.h"
-#include <stdio.h>
-#include <err.h>
-#include <sys/ptrace.h>
-#include <sys/wait.h>
-
-static size_t
-io_ptrace_do(const struct io *io, void *ptr, const size_t offset, const size_t size, size_t (*iofun)(void*, size_t, size_t, FILE*))
-{
- if (fseek(io->backing, offset, SEEK_SET) != 0) {
- warn("fseek(/proc/%u/mem, %zu)", io->pid, offset);
- return 0;
- }
-
- return iofun(ptr, 1, size, io->backing);
-}
-
-static size_t
-io_ptrace_write(const struct io *io, const void *ptr, const size_t offset, const size_t size)
-{
- clearerr(io->backing);
- const size_t ret = io_ptrace_do(io, (void*)ptr, offset, size, (size_t(*)())fwrite);
-
- if (ferror(io->backing))
- warn("fwrite(/proc/%u/mem)", io->pid);
-
- return ret;
-}
-
-static size_t
-io_ptrace_read(const struct io *io, void *ptr, const size_t offset, const size_t size)
-{
- clearerr(io->backing);
- const size_t ret = io_ptrace_do(io, ptr, offset, size, fread);
-
- if (ferror(io->backing))
- warn("fread(/proc/%u/mem)", io->pid);
-
- return ret;
-}
-
-static void
-io_ptrace_cleanup(struct io *io)
-{
- if (io->backing)
- fclose(io->backing);
-
- if (io->pid)
- ptrace(PTRACE_DETACH, io->pid, 1, 0);
-}
-
-bool
-io_ptrace_init(struct io *io, const pid_t pid)
-{
- *io = (struct io){ .pid = pid, .read = io_ptrace_read, .write = io_ptrace_write, .cleanup = io_ptrace_cleanup };
-
- if (ptrace(PTRACE_ATTACH, pid, NULL, NULL) == -1L) {
- warn("ptrace(PTRACE_ATTACH, %u, NULL, NULL)", pid);
- goto fail;
- }
-
- {
- int status;
- if (waitpid(pid, &status, 0) == -1 || !WIFSTOPPED(status)) {
- warn("waitpid(%u) == %d", pid, status);
- goto fail;
- }
- }
-
- char path[128];
- snprintf(path, sizeof(path), "/proc/%u/mem", pid);
- if (!(io->backing = fopen(path, "w+b"))) {
- warn("fopen(%s)", path);
- goto fail;
- }
-
- return true;
-
-fail:
- io->cleanup(io);
- return false;
-}