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Date: Fri, 3 Mar 2017 12:46:26 -0700
From: Andreas Dilger <adilger@...ger.ca>
To: "Darrick J. Wong" <darrick.wong@...cle.com>
Cc: Theodore Ts'o <tytso@....edu>, linux-ext4@...r.kernel.org
Subject: Re: [PATCH 1/2] misc: fix all the compiler warnings
On Mar 2, 2017, at 3:20 PM, Darrick J. Wong <darrick.wong@...cle.com> wrote:
>
> From: Darrick J. Wong <darrick.wong@...cle.com>
>
> Fix the various compiler warnings that have crept in, and only define
> __bitwise if the system headers haven't already done so. Linux 4.10
> changes the __bitwise definition so that our redefinition here is
> just different enough that gcc complains.
>
> Signed-off-by: Darrick J. Wong <darrick.wong@...cle.com>
Reviewed-by: Andreas Dilger <adilger@...ger.ca>
> ---
> debugfs/debugfs.c | 2 --
> debugfs/xattrs.c | 5 ++---
> e2fsck/pass2.c | 2 +-
> lib/ext2fs/ext2_types.h.in | 8 ++++++--
> lib/ext2fs/ext_attr.c | 2 --
> lib/support/cstring.c | 6 +++---
> misc/dumpe2fs.c | 15 ---------------
> 7 files changed, 12 insertions(+), 28 deletions(-)
>
>
> diff --git a/debugfs/debugfs.c b/debugfs/debugfs.c
> index 1a84cfc..059ddc3 100644
> --- a/debugfs/debugfs.c
> +++ b/debugfs/debugfs.c
> @@ -1605,9 +1605,7 @@ void do_unlink(int argc, char *argv[])
> void do_copy_inode(int argc, char *argv[])
> {
> ext2_ino_t src_ino, dest_ino;
> - struct ext2_inode inode;
> unsigned char buf[4096];
> - int retval;
>
> if (common_args_process(argc, argv, 3, 3, "copy_inode",
> "<source file> <dest_name>", CHECK_FS_RW))
> diff --git a/debugfs/xattrs.c b/debugfs/xattrs.c
> index 2443518..9b87d14 100644
> --- a/debugfs/xattrs.c
> +++ b/debugfs/xattrs.c
> @@ -146,7 +146,7 @@ void do_get_xattr(int argc, char **argv)
> size_t buflen;
> int i;
> int print_flags = 0;
> - int handle_flags = 0;
> + unsigned int handle_flags = 0;
> errcode_t err;
>
> reset_getopt();
> @@ -241,8 +241,7 @@ void do_set_xattr(int argc, char **argv)
> FILE *fp = NULL;
> char *buf = NULL;
> size_t buflen;
> - int print_flags = 0;
> - int handle_flags = 0;
> + unsigned int handle_flags = 0;
> int i;
> errcode_t err;
>
> diff --git a/e2fsck/pass2.c b/e2fsck/pass2.c
> index 11c19e8..170878c 100644
> --- a/e2fsck/pass2.c
> +++ b/e2fsck/pass2.c
> @@ -90,7 +90,7 @@ void e2fsck_pass2(e2fsck_t ctx)
> struct ext2_super_block *sb = ctx->fs->super;
> struct problem_context pctx;
> ext2_filsys fs = ctx->fs;
> - char *buf;
> + char *buf = NULL;
> #ifdef RESOURCE_TRACK
> struct resource_track rtrack;
> #endif
> diff --git a/lib/ext2fs/ext2_types.h.in b/lib/ext2fs/ext2_types.h.in
> index 07adc64..fb36a5d 100644
> --- a/lib/ext2fs/ext2_types.h.in
> +++ b/lib/ext2fs/ext2_types.h.in
> @@ -173,10 +173,14 @@ typedef long __s64;
> #define EXT2_ENDIAN_H_
>
> #ifdef __CHECKER__
> -#define __bitwise __attribute__((bitwise))
> +# ifndef __bitwise
> +# define __bitwise __attribute__((bitwise))
> +# endif
> #define __force __attribute__((force))
> #else
> -#define __bitwise
> +# ifndef __bitwise
> +# define __bitwise
> +# endif
> #define __force
> #endif
>
> diff --git a/lib/ext2fs/ext_attr.c b/lib/ext2fs/ext_attr.c
> index ce2f48f..7a9a2d5 100644
> --- a/lib/ext2fs/ext_attr.c
> +++ b/lib/ext2fs/ext_attr.c
> @@ -478,7 +478,6 @@ static errcode_t convert_posix_acl_to_disk_buffer(const void *value, size_t size
> ext4_acl_header *ext_acl;
> size_t s;
> void *e;
> - int err;
>
> int count;
>
> @@ -532,7 +531,6 @@ static errcode_t convert_disk_buffer_to_posix_acl(const void *value, size_t size
> errcode_t err;
> const char *cp;
> char *out;
> - int count;
>
> if ((!value) ||
> (size < sizeof(ext4_acl_header)) ||
> diff --git a/lib/support/cstring.c b/lib/support/cstring.c
> index 7965e95..57f4522 100644
> --- a/lib/support/cstring.c
> +++ b/lib/support/cstring.c
> @@ -15,12 +15,12 @@
>
> int parse_c_string(char *str)
> {
> - unsigned char *to, *from, ch;
> + char *to, *from, ch;
> int v;
>
> to = from = str;
>
> - for (to = from = (unsigned char *) str;
> + for (to = from = (char *) str;
> *from && *from != '"'; to++, from++) {
> if (*from == '\\') {
> ch = *(++from);
> @@ -93,7 +93,7 @@ int parse_c_string(char *str)
> *to = *from;
> }
> *to = '\0';
> - return to - (unsigned char *) str;
> + return to - (char *) str;
> }
>
> void print_c_string(FILE *f, const char *cp, int len)
> diff --git a/misc/dumpe2fs.c b/misc/dumpe2fs.c
> index 621840a..395ea9e 100644
> --- a/misc/dumpe2fs.c
> +++ b/misc/dumpe2fs.c
> @@ -356,16 +356,6 @@ static void list_bad_blocks(ext2_filsys fs, int dump)
> ext2fs_badblocks_list_free(bb_list);
> }
>
> -static const char *journal_checksum_type_str(__u8 type)
> -{
> - switch (type) {
> - case JBD2_CRC32C_CHKSUM:
> - return "crc32c";
> - default:
> - return "unknown";
> - }
> -}
I'd assume this was meant to be used somewhere?
> -
> static void print_inline_journal_information(ext2_filsys fs)
> {
> journal_superblock_t *jsb;
> @@ -374,8 +364,6 @@ static void print_inline_journal_information(ext2_filsys fs)
> errcode_t retval;
> ino_t ino = fs->super->s_journal_inum;
> char buf[1024];
> - __u32 *mask_ptr, mask, m;
> - int i, j, size, printed = 0;
>
> if (fs->flags & EXT2_FLAG_IMAGE_FILE)
> return;
> @@ -411,10 +399,7 @@ static void print_journal_information(ext2_filsys fs)
> {
> errcode_t retval;
> char buf[1024];
> - char str[80];
> - unsigned int i, j, printed = 0;
> journal_superblock_t *jsb;
> - __u32 *mask_ptr, mask, m;
>
> /* Get the journal superblock */
> if ((retval = io_channel_read_blk64(fs->io,
>
Cheers, Andreas
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