FUSE will want to know if stx_attributes is interesting or not, because there's a non-zero cost of retreiving it.
This is more of a "want" flag, since stx_attributes_mask already indicates whether we "got" stx_attributes or not. So for now we can just deal with this flag in the generic code. Signed-off-by: Miklos Szeredi <[email protected]> Cc: David Howells <[email protected]> Cc: Michael Kerrisk <[email protected]> --- fs/stat.c | 3 +++ include/uapi/linux/stat.h | 1 + samples/statx/test-statx.c | 2 +- tools/include/uapi/linux/stat.h | 1 + 4 files changed, 6 insertions(+), 1 deletion(-) diff --git a/fs/stat.c b/fs/stat.c index 8d297a279991..6bf86d57e2e3 100644 --- a/fs/stat.c +++ b/fs/stat.c @@ -535,6 +535,9 @@ cp_statx(const struct kstat *stat, struct statx __user *buffer) tmp.stx_size = stat->size; tmp.stx_blocks = stat->blocks; tmp.stx_attributes_mask = stat->attributes_mask; + /* Having anything in attributes_mask means attributes are valid. */ + if (tmp.stx_attributes_mask) + tmp.stx_mask |= STATX_ATTRIBUTES; tmp.stx_atime.tv_sec = stat->atime.tv_sec; tmp.stx_atime.tv_nsec = stat->atime.tv_nsec; tmp.stx_btime.tv_sec = stat->btime.tv_sec; diff --git a/include/uapi/linux/stat.h b/include/uapi/linux/stat.h index 370f09d92fa6..aef0aba5dfe7 100644 --- a/include/uapi/linux/stat.h +++ b/include/uapi/linux/stat.h @@ -148,6 +148,7 @@ struct statx { #define STATX_BLOCKS 0x00000400U /* Want/got stx_blocks */ #define STATX_BASIC_STATS 0x000007ffU /* The stuff in the normal stat struct */ #define STATX_BTIME 0x00000800U /* Want/got stx_btime */ +#define STATX_ATTRIBUTES 0x00001000U /* Want/got stx_attributes */ #define STATX__RESERVED 0x80000000U /* Reserved for future struct statx expansion */ diff --git a/samples/statx/test-statx.c b/samples/statx/test-statx.c index e354048dea3c..deef9a68ff68 100644 --- a/samples/statx/test-statx.c +++ b/samples/statx/test-statx.c @@ -211,7 +211,7 @@ int main(int argc, char **argv) struct statx stx; int ret, raw = 0, atflag = AT_SYMLINK_NOFOLLOW; - unsigned int mask = STATX_BASIC_STATS | STATX_BTIME; + unsigned int mask = STATX_BASIC_STATS | STATX_BTIME | STATX_ATTRIBUTES; for (argv++; *argv; argv++) { if (strcmp(*argv, "-F") == 0) { diff --git a/tools/include/uapi/linux/stat.h b/tools/include/uapi/linux/stat.h index 370f09d92fa6..aef0aba5dfe7 100644 --- a/tools/include/uapi/linux/stat.h +++ b/tools/include/uapi/linux/stat.h @@ -148,6 +148,7 @@ struct statx { #define STATX_BLOCKS 0x00000400U /* Want/got stx_blocks */ #define STATX_BASIC_STATS 0x000007ffU /* The stuff in the normal stat struct */ #define STATX_BTIME 0x00000800U /* Want/got stx_btime */ +#define STATX_ATTRIBUTES 0x00001000U /* Want/got stx_attributes */ #define STATX__RESERVED 0x80000000U /* Reserved for future struct statx expansion */ -- 2.14.3
