objtool: Rename elf_read() to elf_open_read()

'struct elf *' handling is an open/close paradigm, make sure the naming
matches that:

   elf_open_read()
   elf_write()
   elf_close()

Acked-by: Josh Poimboeuf <[email protected]>
Signed-off-by: Ingo Molnar <[email protected]>
Cc: Borislav Petkov <[email protected]>
Cc: Linus Torvalds <[email protected]>
Cc: Peter Zijlstra <[email protected]>
Cc: Sami Tolvanen <[email protected]>
Cc: Thomas Gleixner <[email protected]>
Link: https://lore.kernel.org/r/[email protected]

Author: Ingo Molnar

tools/objtool/check.c

@@ -2614,7 +2614,7 @@ int check(const char *_objname, bool orc)
 
 	objname = _objname;
 
-	file.elf = elf_read(objname, orc ? O_RDWR : O_RDONLY);
+	file.elf = elf_open_read(objname, orc ? O_RDWR : O_RDONLY);
 	if (!file.elf)
 		return 1;
 

tools/objtool/elf.c

@@ -542,7 +542,7 @@ static int read_relas(struct elf *elf)
 	return 0;
 }
 
-struct elf *elf_read(const char *name, int flags)
+struct elf *elf_open_read(const char *name, int flags)
 {
 	struct elf *elf;
 	Elf_Cmd cmd;

tools/objtool/elf.h

@@ -113,7 +113,7 @@ static inline u32 rela_hash(struct rela *rela)
 	return sec_offset_hash(rela->sec, rela->offset);
 }
 
-struct elf *elf_read(const char *name, int flags);
+struct elf *elf_open_read(const char *name, int flags);
 struct section *elf_create_section(struct elf *elf, const char *name, size_t entsize, int nr);
 struct section *elf_create_rela_section(struct elf *elf, struct section *base);
 void elf_add_rela(struct elf *elf, struct rela *rela);