Commit 5e01fdff authored by Gustavo A. R. Silva's avatar Gustavo A. R. Silva
Browse files

fs: Replace zero-length array with flexible-array member 

There is a regular need in the kernel to provide a way to declare having a
dynamically sized set of trailing elements in a structure. Kernel code should
always use “flexible array members”[1] for these cases. The older style of
one-element or zero-length arrays should no longer be used[2].

[1] https://en.wikipedia.org/wiki/Flexible_array_member
[2] https://www.kernel.org/doc/html/v5.9-rc1/process/deprecated.html#zero-length-and-one-element-arrays



Signed-off-by: default avatarGustavo A. R. Silva <gustavoars@kernel.org>
parent b08eadd2

fs/binfmt_elf.c

+1 −1
Original line number Diff line number Diff line
@@ -1690,7 +1690,7 @@ struct elf_thread_core_info { 
	struct elf_thread_core_info *next;

	struct task_struct *task;

	struct elf_prstatus prstatus;

	struct memelfnote notes[0];

	struct memelfnote notes[];

};



struct elf_note_info {

fs/hfs/btree.h

+1 −1
Original line number Diff line number Diff line
@@ -60,7 +60,7 @@ struct hfs_bnode { 
	wait_queue_head_t lock_wq;

	atomic_t refcnt;

	unsigned int page_offset;

	struct page *page[0];

	struct page *page[];

};



#define HFS_BNODE_ERROR		0

fs/hfsplus/hfsplus_fs.h

+1 −1
Original line number Diff line number Diff line
@@ -117,7 +117,7 @@ struct hfs_bnode { 
	wait_queue_head_t lock_wq;

	atomic_t refcnt;

	unsigned int page_offset;

	struct page *page[0];

	struct page *page[];

};



#define HFS_BNODE_LOCK		0

fs/isofs/rock.h

+4 −4
Original line number Diff line number Diff line
@@ -22,7 +22,7 @@ struct SU_ER_s { 
	__u8 len_des;

	__u8 len_src;

	__u8 ext_ver;

	__u8 data[0];

	__u8 data[];

} __attribute__ ((packed));



struct RR_RR_s {
@@ -44,7 +44,7 @@ struct RR_PN_s { 
struct SL_component {

	__u8 flags;

	__u8 len;

	__u8 text[0];

	__u8 text[];

} __attribute__ ((packed));



struct RR_SL_s {
@@ -54,7 +54,7 @@ struct RR_SL_s { 


struct RR_NM_s {

	__u8 flags;

	char name[0];

	char name[];

} __attribute__ ((packed));



struct RR_CL_s {
@@ -71,7 +71,7 @@ struct stamp { 


struct RR_TF_s {

	__u8 flags;

	struct stamp times[0];	/* Variable number of these beasts */

	struct stamp times[];	/* Variable number of these beasts */

} __attribute__ ((packed));



/* Linux-specific extension for transparent decompression */

fs/select.c

+2 −2
Original line number Diff line number Diff line
@@ -97,7 +97,7 @@ u64 select_estimate_accuracy(struct timespec64 *tv) 
struct poll_table_page {

	struct poll_table_page * next;

	struct poll_table_entry * entry;

	struct poll_table_entry entries[0];

	struct poll_table_entry entries[];

};



#define POLL_TABLE_FULL(table) \
@@ -836,7 +836,7 @@ SYSCALL_DEFINE1(old_select, struct sel_arg_struct __user *, arg) 
struct poll_list {

	struct poll_list *next;

	int len;

	struct pollfd entries[0];

	struct pollfd entries[];

};



#define POLLFD_PER_PAGE  ((PAGE_SIZE-sizeof(struct poll_list)) / sizeof(struct pollfd))

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