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posixshmcontrol(1): for regular shmfd, report used pages number

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Reviewed by:	markj
Tested by:	pho
Sponsored by:	The FreeBSD Foundation
MFC after:	1 week
Differential revision:	https://reviews.freebsd.org/D37097
This commit is contained in:
Konstantin Belousov 2022-11-24 00:01:05 +02:00
parent 0919f29d91
commit 1bbc510134
1 changed files with 7 additions and 1 deletions
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8
usr.bin/posixshmcontrol/posixshmcontrol.c
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@ -404,6 +404,8 @@ stat_one_shm(const char *path, bool hsize, bool uname)
char sizebuf[8];
struct stat st;
int error, fd, ret;
struct shm_largepage_conf conf_dummy;
bool largepage;
fd = shm_open(path, O_RDONLY, 0);
if (fd == -1) {
@ -442,9 +444,13 @@ stat_one_shm(const char *path, bool hsize, bool uname)
(long)st.st_ctim.tv_nsec);
printf("birth\t%ld.%09ld\n", (long)st.st_birthtim.tv_sec,
(long)st.st_birthtim.tv_nsec);
if (st.st_blocks != 0)
error = ioctl(fd, FIOGSHMLPGCNF, &conf_dummy);
largepage = error == 0;
if (st.st_blocks != 0 && largepage)
printf("pagesz\t%jd\n", roundup((uintmax_t)st.st_size,
PAGE_SIZE) / st.st_blocks);
else
printf("pages\t%jd\n", st.st_blocks);
}
close(fd);
return (ret);