user/libc: prepare for OpenED port

1 files changed, 0 insertions, 256 deletions

diff --git a/src/user/lib/file.c b/src/user/lib/file.c
deleted file mode 100644
index f2b74b1..0000000
--- a/src/user/lib/file.c
+++ /dev/null
@@ -1,256 +0,0 @@
-#include "file.h"
-#include <camellia/syscalls.h>
-#include <camellia/flags.h>
-#include <errno.h>
-#include <stdio.h>
-#include <stdlib.h>
-#include <string.h>
-#include <unistd.h>
-
-static FILE _stdin_null  = { .fd = 0 };
-static FILE _stdout_null = { .fd = 1 };
-static FILE _stderr_null = { .fd = 2 };
-FILE *const stdin = &_stdin_null;
-FILE *const stdout = &_stdout_null;
-FILE *const stderr = &_stderr_null;
-
-
-FILE *fopen(const char *path, const char *mode) {
-	FILE *f;
-	handle_t h;
-	int flags = 0;
-	char *tmppath = NULL;
-	if (!path) {
-		errno = -1;
-		return NULL;
-	} else if (path[0] == '!') {
-		/* special handling for "!files" */
-		path++;
-		if (!strcmp(path, "stdin"))  return file_clone(stdin, mode);
-		if (!strcmp(path, "stdout")) return file_clone(stdout, mode);
-		if (!strcmp(path, "stderr")) return file_clone(stderr, mode);
-		errno = -1;
-		return NULL;
-	}
-
-	if (path && path[0] != '/') {
-		size_t len = absolutepath(NULL, path, 0);
-		tmppath = malloc(len);
-		if (!tmppath) return NULL;
-		absolutepath(tmppath, path, len);
-		path = tmppath;
-	}
-
-	if (mode[0] == 'w' || mode[0] == 'a')
-		flags |= OPEN_CREATE;
-
-	h = _syscall_open(path, strlen(path), flags);
-	if (tmppath) free(tmppath);
-	if (h < 0) {
-		errno = -h;
-		return NULL;
-	}
-
-	if (mode[0] == 'w')
-		_syscall_write(h, NULL, 0, 0, WRITE_TRUNCATE);
-
-	f = fdopen(h, mode);
-	if (!f) close(h);
-	return f;
-}
-
- FILE *freopen(const char *path, const char *mode, FILE *f) {
-	/* partially based on the musl implementation of freopen */
-	FILE *f2;
-	if (!path) goto fail;
-	f2 = fopen(path, mode);
-	if (!f2) goto fail;
-
-	if (f->fd == f2->fd) {
-		f2->fd = -1;
-	} else {
-		if (_syscall_dup(f2->fd, f->fd, 0) < 0) goto fail2;
-	}
-	f->pos = f2->pos;
-	f->eof = f2->eof;
-	fclose(f2);
-	return f;
-
-fail2:
-	fclose(f2);
-fail:
-	fclose(f);
-	return NULL;
-}
-
-FILE *fdopen(int fd, const char *mode) {
-	FILE *f;
-	f = malloc(sizeof *f);
-	if (!f) return NULL;
-	f->fd = fd;
-	f->pos = mode[0] == 'a' ? -1 : 0;
-	f->eof = false;
-	f->error = false;
-	f->extflags = 0;
-	return f;
-}
-
-FILE *file_clone(const FILE *f, const char *mode) {
-	handle_t h = _syscall_dup(f->fd, -1, 0);
-	FILE *f2;
-	if (h < 0) return NULL;
-
-	f2 = fdopen(h, mode);
-	if (!f2) {
-		close(h);
-		return NULL;
-	}
-	f2->pos = f->pos;
-	f2->eof = f->eof;
-	f2->fd = h;
-	return f2;
-}
-
-int fextflags(FILE *f, int extflags) {
-	int old = f->extflags;
-	f->extflags = extflags;
-	return old;
-}
-
-static void fadvance(long amt, FILE *f) {
-	bool pos_neg = f->pos < 0;
-	f->pos += amt;
-	if (pos_neg && f->pos >= 0)
-		f->pos = -1;
-}
-
-size_t fread(void *restrict ptr, size_t size, size_t nitems, FILE *restrict f) {
-	size_t total = size*nitems, pos = 0;
-	unsigned char *buf = ptr;
-
-	if (f->fd < 0) {
-		errno = EBADF;
-		return 0;
-	}
-	if (size == 0)
-		return 0;
-
-	while (pos < total) {
-		long res = _syscall_read(f->fd, buf + pos, total - pos, f->pos);
-		if (res < 0) {
-			f->error = true;
-			errno = -res;
-			break;
-		} else if (res == 0) {
-			f->eof = true;
-			break;
-		}
-		pos += res;
-		fadvance(res, f);
-		if (f->extflags & FEXT_NOFILL) break;
-	}
-	return pos == total ? nitems : (pos/size);
-}
-
-size_t fwrite(const void *restrict ptr, size_t size, size_t nitems, FILE *restrict f) {
-	size_t total = size*nitems, pos = 0;
-	const unsigned char *buf = ptr;
-
-	if (f->fd < 0) {
-		errno = EBADF;
-		return 0;
-	}
-	if (size == 0)
-		return 0;
-
-	while (pos < total) {
-		long res = _syscall_write(f->fd, buf + pos, total - pos, f->pos, 0);
-		if (res < 0) {
-			f->error = true;
-			errno = -res;
-			return pos/size;
-		} else if (res == 0) {
-			f->eof = true;
-			return pos/size;
-		} else {
-			pos += res;
-			fadvance(res, f);
-		}
-	}
-	return nitems;
-}
-
-char *fgets(char *buf, int size, FILE *f) {
-	char c = '\0';
-	long pos = 0;
-	while (pos < (size-1) && c != '\n' && fread(&c, 1, 1, f))
-		buf[pos++] = c;
-	buf[pos++] = '\0';
-
-	if (f->eof && pos == 1) return NULL;
-	if (f->error) return NULL;
-	return buf;
-}
-
-int fseek(FILE *f, long offset, int whence) {
-	if (fflush(f))
-		return -1;
-
-	long base;
-	switch (whence) {
-		case SEEK_SET:
-			base = 0;
-			break;
-		case SEEK_CUR:
-			base = f->pos;
-			break;
-		case SEEK_END:
-			base = _syscall_getsize(f->fd);
-			if (base < 0)
-				base = -1;
-			break;
-		default:
-			errno = EINVAL;
-			return -1;
-	}
-
-	if (base >= 0 && base + offset < 0) {
-		/* underflow */
-		errno = EINVAL;
-		return -1;
-	} else if (base < 0 && base + offset >= 0) {
-		/* overflow - went from a negative offset (relative to EOF)
-		 *            to a positive offset (from start of file).
-		 *            can only happen when getsize() is unsupported */
-		errno = EINVAL;
-		return -1;
-	}
-	f->pos = base + offset;
-	f->eof = false;
-	return 0;
-}
-
-long ftell(FILE *f) {
-	return f->pos;
-}
-
-int fclose(FILE *f) {
-	fflush(f);
-	if (f->fd > 0) close(f->fd);
-	if (f != &_stdin_null && f != &_stdout_null && f != &_stderr_null)
-		free(f);
-	return 0;
-}
-
-int fflush(FILE *f) {
-	(void)f;
-	return 0;
-}
-
-int feof(FILE *f) {
-	return f->eof;
-}
-
-int ferror(FILE *f) {
-	return f->error;
-}