- orphaned, outdated

Changed files:
    chpax.c -> 1.3

1 files changed, 0 insertions, 244 deletions

diff --git a/chpax.c b/chpax.c
deleted file mode 100644
index d5482d1..0000000
--- a/chpax.c
+++ /dev/null
@@ -1,244 +0,0 @@
-/*
- * This program manages various PaX related flags for ELF and a.out binaries.
- * The flags only have effect when running the patched Linux kernel.
- *
- * Written by Solar Designer and placed in the public domain.
- *
- * Adapted to PaX by the PaX Team.
- */
-
-#include <stdio.h>
-#include <string.h>
-#include <sys/types.h>
-#include <fcntl.h>
-#include <unistd.h>
-#include <linux/elf.h>
-#include <linux/a.out.h>
-
-#define HF_PAX_PAGEEXEC         1       /* 0: Paging based non-executable pages */
-#define HF_PAX_EMUTRAMP         2       /* 0: Emulate trampolines */
-#define HF_PAX_MPROTECT         4       /* 0: Restrict mprotect() */
-#define HF_PAX_RANDMMAP         8       /* 0: Randomize mmap() base */
-#define HF_PAX_RANDEXEC         16      /* 1: Randomize ET_EXEC base */
-#define HF_PAX_SEGMEXEC         32      /* 0: Segmentation based non-executable pages */
-
-static struct elf32_hdr header_elf;
-static struct exec header_aout;
-static void *header;
-static int header_size;
-static int fd;
-
-static unsigned long (*get_flags)();
-static void (*put_flags)(unsigned long);
-
-static unsigned long get_flags_elf()
-{
-	return header_elf.e_flags;
-}
-
-static void put_flags_elf(unsigned long flags)
-{
-	header_elf.e_flags = flags;
-}
-
-static unsigned long get_flags_aout()
-{
-	return N_FLAGS(header_aout);
-}
-
-static void put_flags_aout(unsigned long flags)
-{
-	N_SET_FLAGS(header_aout, flags & ~HF_PAX_RANDMMAP);
-}
-
-static int read_header(char *name, int mode)
-{
-	char *ptr;
-	int size, block;
-
-	if ((fd = open(name, mode)) < 0) return 1;
-
-	ptr = (char *)&header_elf;
-	size = sizeof(header_elf);
-	do {
-		block = read(fd, ptr, size);
-		if (block <= 0) {
-			close(fd);
-			return block ? 1 : 2;
-		}
-		ptr += block; size -= block;
-	} while (size > 0);
-
-	memcpy(&header_aout, &header_elf, sizeof(header_aout));
-
-	if (!strncmp(header_elf.e_ident, ELFMAG, SELFMAG)) {
-		if (header_elf.e_type != ET_EXEC && header_elf.e_type != ET_DYN) return 2;
-		if (header_elf.e_machine != EM_386) return 3;
-		header = &header_elf; header_size = sizeof(header_elf);
-		get_flags = get_flags_elf; put_flags = put_flags_elf;
-	} else
-	if (N_MAGIC(header_aout) == NMAGIC ||
-	    N_MAGIC(header_aout) == ZMAGIC ||
-	    N_MAGIC(header_aout) == QMAGIC) {
-		if (N_MACHTYPE(header_aout) != M_386) return 3;
-		header = &header_aout; header_size = 4;
-		get_flags = get_flags_aout; put_flags = put_flags_aout;
-	} else return 2;
-
-	return 0;
-}
-
-int write_header()
-{
-	char *ptr;
-	int size, block;
-
-	if (lseek(fd, 0, SEEK_SET)) return 1;
-
-	ptr = (char *)header;
-	size = header_size;
-	do {
-		block = write(fd, ptr, size);
-		if (block <= 0) break;
-		ptr += block; size -= block;
-	} while (size > 0);
-
-	return size;
-}
-
-#define USAGE \
-"Usage: %s OPTIONS FILE...\n" \
-"Manage PaX flags for binaries\n\n" \
-"  -P\tenforce paging based non-executable pages\n" \
-"  -p\tdo not enforce paging based non-executable pages\n" \
-"  -E\temulate trampolines\n" \
-"  -e\tdo not emulate trampolines\n" \
-"  -M\trestrict mprotect()\n" \
-"  -m\tdo not restrict mprotect()\n" \
-"  -R\trandomize mmap() base [ELF only]\n" \
-"  -r\tdo not randomize mmap() base [ELF only]\n" \
-"  -X\trandomize ET_EXEC base [ELF only]\n" \
-"  -x\tdo not randomize ET_EXEC base [ELF only]\n" \
-"  -S\tenforce segmentation based non-executable pages\n" \
-"  -s\tdo not enforce segmentation based non-executable pages\n" \
-"  -v\tview current flag state\n\n" \
-"The flags only have effect when running the patched Linux kernel.\n"
-
-void usage(char *name)
-{
-	printf(USAGE, name ? name : "chpax");
-	exit(1);
-}
-
-int main(int argc, char **argv)
-{
-	char **current;
-	unsigned long flags;
-	int error = 0;
-	int mode;
-
-	if (argc < 3) usage(argv[0]);
-	if (strlen(argv[1]) != 2) usage(argv[0]);
-	if (argv[1][0] != '-' || !strchr("pPeEmMrRxXsSv", argv[1][1])) usage(argv[0]);
-
-	current = &argv[2];
-	do {
-		mode = argv[1][1] == 'v' ? O_RDONLY : O_RDWR;
-		switch (read_header(*current, mode)) {
-		case 1:
-			perror(*current);
-			error = 1; continue;
-
-		case 2:
-			printf("%s: Unknown file type\n", *current);
-			error = 1; continue;
-
-		case 3:
-			printf("%s: Wrong architecture\n", *current);
-			error = 1; continue;
-		}
-
-		flags = get_flags();
-
-		switch (argv[1][1]) {
-		case 'p':
-			put_flags(flags | HF_PAX_PAGEEXEC);
-			break;
-
-		case 'P':
-			put_flags((flags & ~HF_PAX_PAGEEXEC)|HF_PAX_SEGMEXEC);
-			break;
-
-		case 'E':
-			put_flags(flags | HF_PAX_EMUTRAMP);
-			break;
-
-		case 'e':
-			put_flags(flags & ~HF_PAX_EMUTRAMP);
-			break;
-
-		case 'm':
-			put_flags(flags | HF_PAX_MPROTECT);
-			break;
-
-		case 'M':
-			put_flags(flags & ~HF_PAX_MPROTECT);
-			break;
-
-		case 'r':
-			put_flags(flags | HF_PAX_RANDMMAP);
-			break;
-
-		case 'R':
-			put_flags(flags & ~HF_PAX_RANDMMAP);
-			break;
-
-		case 'X':
-			put_flags(flags | HF_PAX_RANDEXEC);
-			break;
-
-		case 'x':
-			put_flags(flags & ~HF_PAX_RANDEXEC);
-			break;
-
-		case 's':
-			put_flags(flags | HF_PAX_SEGMEXEC);
-			break;
-
-		case 'S':
-			put_flags((flags & ~HF_PAX_SEGMEXEC)|HF_PAX_PAGEEXEC);
-			break;
-
-		default:
-			printf("%s: "
-			       "paging based PAGE_EXEC is %s, "
-			       "trampolines are %s, "
-			       "mprotect() is %s, "
-			       "mmap() base is %s, "
-			       "ET_EXEC base is %s, "
-			       "segmentation based PAGE_EXEC is %s\n", *current,
-				(flags & HF_PAX_PAGEEXEC) || !(flags & HF_PAX_SEGMEXEC)
-				? "disabled" : "enabled",
-				flags & HF_PAX_EMUTRAMP
-				? "emulated" : "not emulated",
-				flags & HF_PAX_MPROTECT
-				? "not restricted" : "restricted",
-				flags & HF_PAX_RANDMMAP
-				? "not randomized" : "randomized",
-				flags & HF_PAX_RANDEXEC
-				? "randomized" : "not randomized",
-				flags & HF_PAX_SEGMEXEC
-				? "disabled" : "enabled");
-		}
-
-		if (flags != get_flags())
-		if (write_header()) {
-			perror(*current);
-			error = 1;
-		}
-
-		close(fd);
-	} while (*++current);
-
-	return error;
-}