From: Al Viro <viro@zeniv.linux.org.uk>
Date: Sat, 5 Oct 2013 21:22:57 +0000 (-0400)
Subject: switch elf_core_write_extra_phdrs() to dump_emit()
X-Git-Url: https://git.stricted.de/?a=commitdiff_plain;h=506f21c556c747bb07b893f146220ec45cda381b;p=GitHub%2Fmoto-9609%2Fandroid_kernel_motorola_exynos9610.git

switch elf_core_write_extra_phdrs() to dump_emit()

Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
---

diff --git a/arch/ia64/kernel/elfcore.c b/arch/ia64/kernel/elfcore.c
index bac1639bc320..798ce543da4b 100644
--- a/arch/ia64/kernel/elfcore.c
+++ b/arch/ia64/kernel/elfcore.c
@@ -11,8 +11,7 @@ Elf64_Half elf_core_extra_phdrs(void)
 	return GATE_EHDR->e_phnum;
 }
 
-int elf_core_write_extra_phdrs(struct file *file, loff_t offset, size_t *size,
-			       unsigned long limit)
+int elf_core_write_extra_phdrs(struct coredump_params *cprm, loff_t offset)
 {
 	const struct elf_phdr *const gate_phdrs =
 		(const struct elf_phdr *) (GATE_ADDR + GATE_EHDR->e_phoff);
@@ -35,8 +34,7 @@ int elf_core_write_extra_phdrs(struct file *file, loff_t offset, size_t *size,
 			phdr.p_offset += ofs;
 		}
 		phdr.p_paddr = 0; /* match other core phdrs */
-		*size += sizeof(phdr);
-		if (*size > limit || !dump_write(file, &phdr, sizeof(phdr)))
+		if (!dump_emit(cprm, &phdr, sizeof(phdr)))
 			return 0;
 	}
 	return 1;
diff --git a/arch/x86/um/elfcore.c b/arch/x86/um/elfcore.c
index 6bb49b687c97..fc21f98efafe 100644
--- a/arch/x86/um/elfcore.c
+++ b/arch/x86/um/elfcore.c
@@ -11,8 +11,7 @@ Elf32_Half elf_core_extra_phdrs(void)
 	return vsyscall_ehdr ? (((struct elfhdr *)vsyscall_ehdr)->e_phnum) : 0;
 }
 
-int elf_core_write_extra_phdrs(struct file *file, loff_t offset, size_t *size,
-			       unsigned long limit)
+int elf_core_write_extra_phdrs(struct coredump_params *cprm, loff_t offset)
 {
 	if ( vsyscall_ehdr ) {
 		const struct elfhdr *const ehdrp =
@@ -32,9 +31,7 @@ int elf_core_write_extra_phdrs(struct file *file, loff_t offset, size_t *size,
 				phdr.p_offset += ofs;
 			}
 			phdr.p_paddr = 0; /* match other core phdrs */
-			*size += sizeof(phdr);
-			if (*size > limit
-			    || !dump_write(file, &phdr, sizeof(phdr)))
+			if (!dump_emit(cprm, &phdr, sizeof(phdr)))
 				return 0;
 		}
 	}
diff --git a/fs/binfmt_elf.c b/fs/binfmt_elf.c
index 00fd9c969a27..35c4886dae2d 100644
--- a/fs/binfmt_elf.c
+++ b/fs/binfmt_elf.c
@@ -2152,11 +2152,11 @@ static int elf_core_dump(struct coredump_params *cprm)
 		if (!dump_emit(cprm, &phdr, sizeof(phdr)))
 			goto end_coredump;
 	}
-	size = cprm->written;
 
-	if (!elf_core_write_extra_phdrs(cprm->file, offset, &size, cprm->limit))
+	if (!elf_core_write_extra_phdrs(cprm, offset))
 		goto end_coredump;
 
+	size = cprm->written;
 	cprm->written = foffset;	/* will disappear */
  	/* write out the notes section */
 	if (!write_note_info(&info, cprm))
diff --git a/fs/binfmt_elf_fdpic.c b/fs/binfmt_elf_fdpic.c
index ea4c6273b4a5..44db8b92121a 100644
--- a/fs/binfmt_elf_fdpic.c
+++ b/fs/binfmt_elf_fdpic.c
@@ -1791,9 +1791,11 @@ static int elf_fdpic_core_dump(struct coredump_params *cprm)
 			goto end_coredump;
 	}
 
-	if (!elf_core_write_extra_phdrs(cprm->file, offset, &size, cprm->limit))
+	cprm->written = size;
+	if (!elf_core_write_extra_phdrs(cprm, offset))
 		goto end_coredump;
 
+	size = cprm->written;
  	/* write out the notes section */
 	for (i = 0; i < numnote; i++)
 		if (!writenote(notes + i, cprm->file, &foffset))
diff --git a/include/linux/elfcore.h b/include/linux/elfcore.h
index cdd3d13efce7..1b92a8c40624 100644
--- a/include/linux/elfcore.h
+++ b/include/linux/elfcore.h
@@ -6,6 +6,8 @@
 #include <asm/elf.h>
 #include <uapi/linux/elfcore.h>
 
+struct coredump_params;
+
 static inline void elf_core_copy_regs(elf_gregset_t *elfregs, struct pt_regs *regs)
 {
 #ifdef ELF_CORE_COPY_REGS
@@ -63,8 +65,7 @@ static inline int elf_core_copy_task_xfpregs(struct task_struct *t, elf_fpxregse
  */
 extern Elf_Half elf_core_extra_phdrs(void);
 extern int
-elf_core_write_extra_phdrs(struct file *file, loff_t offset, size_t *size,
-			   unsigned long limit);
+elf_core_write_extra_phdrs(struct coredump_params *cprm, loff_t offset);
 extern int
 elf_core_write_extra_data(struct file *file, size_t *size, unsigned long limit);
 extern size_t elf_core_extra_data_size(void);
diff --git a/kernel/elfcore.c b/kernel/elfcore.c
index ff915efef66d..e556751d15d9 100644
--- a/kernel/elfcore.c
+++ b/kernel/elfcore.c
@@ -1,23 +1,19 @@
 #include <linux/elf.h>
 #include <linux/fs.h>
 #include <linux/mm.h>
-
-#include <asm/elf.h>
-
+#include <linux/binfmts.h>
 
 Elf_Half __weak elf_core_extra_phdrs(void)
 {
 	return 0;
 }
 
-int __weak elf_core_write_extra_phdrs(struct file *file, loff_t offset, size_t *size,
-				      unsigned long limit)
+int __weak elf_core_write_extra_phdrs(struct coredump_params *cprm, loff_t offset)
 {
 	return 1;
 }
 
-int __weak elf_core_write_extra_data(struct file *file, size_t *size,
-				     unsigned long limit)
+int __weak elf_core_write_extra_data(struct coredump_params *cprm)
 {
 	return 1;
 }