修改内核路径

hc

2024-05-14 bedbef8ad3e75a304af6361af235302bcc61d06b

 kernel/fs/binfmt_aout.c
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..
@@ -1,3 +1,4 @@
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+// SPDX-License-Identifier: GPL-2.0-only
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 /*
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  *  linux/fs/binfmt_aout.c
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  *
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@@ -29,97 +30,14 @@
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 #include <linux/uaccess.h>
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 #include <asm/cacheflush.h>
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-#include <asm/a.out-core.h>
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 static int load_aout_binary(struct linux_binprm *);
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 static int load_aout_library(struct file*);
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-
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-#ifdef CONFIG_COREDUMP
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-/*
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- * Routine writes a core dump image in the current directory.
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- * Currently only a stub-function.
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- *
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- * Note that setuid/setgid files won't make a core-dump if the uid/gid
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- * changed due to the set[u|g]id. It's enforced by the "current->mm->dumpable"
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- * field, which also makes sure the core-dumps won't be recursive if the
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- * dumping of the process results in another error..
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- */
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-static int aout_core_dump(struct coredump_params *cprm)
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-{
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-	mm_segment_t fs;
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-	int has_dumped = 0;
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-	void __user *dump_start;
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-	int dump_size;
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-	struct user dump;
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-#ifdef __alpha__
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-#       define START_DATA(u)	((void __user *)u.start_data)
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-#else
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-#	define START_DATA(u)	((void __user *)((u.u_tsize << PAGE_SHIFT) + \
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-				 u.start_code))
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-#endif
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-#       define START_STACK(u)   ((void __user *)u.start_stack)
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-
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-	fs = get_fs();
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-	set_fs(KERNEL_DS);
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-	has_dumped = 1;
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-       	strncpy(dump.u_comm, current->comm, sizeof(dump.u_comm));
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-	dump.u_ar0 = offsetof(struct user, regs);
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-	dump.signal = cprm->siginfo->si_signo;
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-	aout_dump_thread(cprm->regs, &dump);
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-
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-/* If the size of the dump file exceeds the rlimit, then see what would happen
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-   if we wrote the stack, but not the data area.  */
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-	if ((dump.u_dsize + dump.u_ssize+1) * PAGE_SIZE > cprm->limit)
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-		dump.u_dsize = 0;
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-
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-/* Make sure we have enough room to write the stack and data areas. */
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-	if ((dump.u_ssize + 1) * PAGE_SIZE > cprm->limit)
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-		dump.u_ssize = 0;
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-
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-/* make sure we actually have a data and stack area to dump */
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-	set_fs(USER_DS);
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-	if (!access_ok(VERIFY_READ, START_DATA(dump), dump.u_dsize << PAGE_SHIFT))
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-		dump.u_dsize = 0;
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-	if (!access_ok(VERIFY_READ, START_STACK(dump), dump.u_ssize << PAGE_SHIFT))
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-		dump.u_ssize = 0;
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-
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-	set_fs(KERNEL_DS);
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-/* struct user */
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-	if (!dump_emit(cprm, &dump, sizeof(dump)))
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-		goto end_coredump;
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-/* Now dump all of the user data.  Include malloced stuff as well */
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-	if (!dump_skip(cprm, PAGE_SIZE - sizeof(dump)))
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-		goto end_coredump;
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-/* now we start writing out the user space info */
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-	set_fs(USER_DS);
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-/* Dump the data area */
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-	if (dump.u_dsize != 0) {
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-		dump_start = START_DATA(dump);
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-		dump_size = dump.u_dsize << PAGE_SHIFT;
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-		if (!dump_emit(cprm, dump_start, dump_size))
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-			goto end_coredump;
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-	}
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-/* Now prepare to dump the stack area */
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-	if (dump.u_ssize != 0) {
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-		dump_start = START_STACK(dump);
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-		dump_size = dump.u_ssize << PAGE_SHIFT;
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-		if (!dump_emit(cprm, dump_start, dump_size))
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-			goto end_coredump;
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-	}
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-end_coredump:
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-	set_fs(fs);
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-	return has_dumped;
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-}
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-#else
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-#define aout_core_dump NULL
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-#endif
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 static struct linux_binfmt aout_format = {
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 	.module		= THIS_MODULE,
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 	.load_binary	= load_aout_binary,
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 	.load_shlib	= load_aout_library,
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-	.core_dump	= aout_core_dump,
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-	.min_coredump	= PAGE_SIZE
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 };
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 #define BAD_ADDR(x)	((unsigned long)(x) >= TASK_SIZE)
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@@ -233,7 +151,7 @@
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 		return -ENOMEM;
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 	/* Flush all traces of the currently running executable */
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-	retval = flush_old_exec(bprm);
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+	retval = begin_new_exec(bprm);
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 	if (retval)
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 		return retval;
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@@ -256,7 +174,6 @@
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 	if (retval < 0)
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 		return retval;
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-	install_exec_creds(bprm);
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 	if (N_MAGIC(ex) == OMAGIC) {
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 		unsigned long text_addr, map_size;