On 08/12, Chao Yu wrote:
> On 2019/8/9 23:23, Jaegeuk Kim wrote:
> > From: Jaegeuk Kim <jaeg...@google.com>
> >
> > Signed-off-by: Jaegeuk Kim <jaeg...@google.com>
> > ---
> > tools/f2fs_io/f2fs_io.c | 91 +++++++++++++++++++++++++++++++++++++++++
> > tools/f2fs_io/f2fs_io.h | 14 +++++++
> > 2 files changed, 105 insertions(+)
> >
> > diff --git a/tools/f2fs_io/f2fs_io.c b/tools/f2fs_io/f2fs_io.c
> > index 6b43778..b57c458 100644
> > --- a/tools/f2fs_io/f2fs_io.c
> > +++ b/tools/f2fs_io/f2fs_io.c
> > @@ -45,6 +45,95 @@ struct cmd_desc {
> > int cmd_flags;
> > };
> >
> > +#define getflags_desc "getflags ioctl"
> > +#define getflags_help \
> > +"f2fs_io getflags [file]\n\n" \
> > +"get a flag given the file\n" \
> > +"flag can show \n" \
> > +" casefold\n" \
> > +" compression\n" \
> > +" nocompression\n"
>
> Could we support +/- flags?
>
> > +
> > +static void do_getflags(int argc, char **argv, const struct cmd_desc *cmd)
> > +{
> > + long flag;
> > + int ret, fd;
> > + int exist = 0;
> > +
> > + if (argc != 2) {
> > + fputs("Excess arguments\n\n", stderr);
> > + fputs(cmd->cmd_help, stderr);
> > + exit(1);
> > + }
> > +
> > + fd = open(argv[1], O_RDONLY);
> > + if (fd == -1) {
> > + fputs("Open failed\n\n", stderr);
> > + fputs(cmd->cmd_help, stderr);
> > + exit(1);
> > + }
> > + ret = ioctl(fd, F2FS_IOC_GETFLAGS, &flag);
> > + printf("get a flag on %s ret=%d, flags=", argv[1], ret);
> > + if (flag & FS_CASEFOLD_FL) {
> > + printf("casefold");
> > + exist = 1;
> > + }
> > + if (flag & FS_COMPR_FL) {
> > + if (exist)
> > + printf(",");
> > + printf("compression");
> > + exist = 1;
> > + }
> > + if (flag & FS_NOCOMP_FL) {
> > + if (exist)
> > + printf(",");
> > + printf("nocompression");
> > + exist = 1;
> > + }
> > + if (!exist)
> > + printf("none");
> > + printf("\n");
> > + exit(0);
> > +}
> > +
> > +#define setflags_desc "setflags ioctl"
> > +#define setflags_help \
> > +"f2fs_io setflags [flag] [file]\n\n" \
> > +"set a flag given the file\n" \
> > +"flag can be\n" \
> > +" casefold\n" \
> > +" compression\n" \
> > +" nocompression\n"
> > +
> > +static void do_setflags(int argc, char **argv, const struct cmd_desc *cmd)
> > +{
> > + long flag;
> > + int ret, fd;
> > +
> > + if (argc != 3) {
> > + fputs("Excess arguments\n\n", stderr);
> > + fputs(cmd->cmd_help, stderr);
> > + exit(1);
> > + }
> > +
> > + fd = open(argv[2], O_RDONLY);
> > + if (fd == -1) {
> > + fputs("Open failed\n\n", stderr);
> > + fputs(cmd->cmd_help, stderr);
> > + exit(1);
> > + }
> > + if (!strcmp(argv[1], "casefold"))
> > + flag = FS_CASEFOLD_FL;
> > + else if (!strcmp(argv[1], "compression"))
> > + flag = FS_COMPR_FL;
> > + else if (!strcmp(argv[1], "nocompression"))
> > + flag = FS_NOCOMP_FL;
> > +
> > + ret = ioctl(fd, F2FS_IOC_SETFLAGS, &flag);
>
> It will drop other existed flags, should be:
Is it correct?
In f2fs_setflags_common,
fi->i_flags = iflags | (fi->i_flags & ~mask);
>
> F2FS_IOC_GETFLAGS flag
> flag +/- FS_*_FL
> F2FS_IOC_SETFLAGS flag
>
> Thanks,
>
> > + printf("set a flag: %s ret=%d\n", argv[2], ret);
> > + exit(0);
> > +}
> > +
> > #define shutdown_desc "shutdown filesystem"
> > #define shutdown_help \
> > "f2fs_io shutdown [level] [dir]\n\n" \
> > @@ -488,6 +577,8 @@ static void do_defrag_file(int argc, char **argv, const
> > struct cmd_desc *cmd)
> > static void do_help(int argc, char **argv, const struct cmd_desc *cmd);
> > const struct cmd_desc cmd_list[] = {
> > _CMD(help),
> > + CMD(getflags),
> > + CMD(setflags),
> > CMD(shutdown),
> > CMD(pinfile),
> > CMD(fallocate),
> > diff --git a/tools/f2fs_io/f2fs_io.h b/tools/f2fs_io/f2fs_io.h
> > index 95fd5be..5768c1b 100644
> > --- a/tools/f2fs_io/f2fs_io.h
> > +++ b/tools/f2fs_io/f2fs_io.h
> > @@ -41,9 +41,13 @@ typedef u32 __be32;
> > #ifndef FS_IOC_GETFLAGS
> > #define FS_IOC_GETFLAGS _IOR('f', 1, long)
> > #endif
> > +#ifndef FS_IOC_SETFLAGS
> > +#define FS_IOC_SETFLAGS _IOW('f', 2, long)
> > +#endif
> >
> > #define F2FS_IOCTL_MAGIC 0xf5
> > #define F2FS_IOC_GETFLAGS FS_IOC_GETFLAGS
> > +#define F2FS_IOC_SETFLAGS FS_IOC_SETFLAGS
> >
> > #define F2FS_IOC_START_ATOMIC_WRITE _IO(F2FS_IOCTL_MAGIC, 1)
> > #define F2FS_IOC_COMMIT_ATOMIC_WRITE _IO(F2FS_IOCTL_MAGIC, 2)
> > @@ -98,6 +102,16 @@ typedef u32 __be32;
> > #define F2FS_IOC_FSGETXATTR FS_IOC_FSGETXATTR
> > #define F2FS_IOC_FSSETXATTR FS_IOC_FSSETXATTR
> >
> > +#ifndef FS_NOCOMP_FL
> > +#define FS_NOCOMP_FL 0x00000400 /* Don't compress */
> > +#endif
> > +#ifndef FS_COMPR_FL
> > +#define FS_COMPR_FL 0x00000004 /* Compress file */
> > +#endif
> > +#ifndef FS_CASEFOLD_FL
> > +#define FS_CASEFOLD_FL 0x40000000 /* Folder is case
> > insensitive */
> > +#endif
> > +
> > struct f2fs_gc_range {
> > u32 sync;
> > u64 start;
> >
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