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MFC r283492:

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Implement Linux specific syncfs() system call.
This commit is contained in:
dchagin 2016-01-09 17:54:37 +00:00
parent 5835d4a5eb
commit ddaf8065bb
7 changed files with 44 additions and 6 deletions
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1
sys/amd64/linux/linux_dummy.c
View File

@ -113,7 +113,6 @@ DUMMY(fanotify_mark);
DUMMY(name_to_handle_at);
DUMMY(open_by_handle_at);
DUMMY(clock_adjtime);
DUMMY(syncfs);
DUMMY(setns);
DUMMY(process_vm_readv);
DUMMY(process_vm_writev);

2
sys/amd64/linux/syscalls.master
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@ -502,7 +502,7 @@
303 AUE_NULL STD { int linux_name_to_handle_at(void); }
304 AUE_NULL STD { int linux_open_by_handle_at(void); }
305 AUE_NULL STD { int linux_clock_adjtime(void); }
306 AUE_NULL STD { int linux_syncfs(void); }
306 AUE_SYNC STD { int linux_syncfs(l_int fd); }
307 AUE_NULL STD { int linux_sendmmsg(l_int s, \
struct l_mmsghdr *msg, l_uint vlen, \
l_uint flags); }

1
sys/amd64/linux32/linux32_dummy.c
View File

@ -125,7 +125,6 @@ DUMMY(fanotify_mark);
DUMMY(name_to_handle_at);
DUMMY(open_by_handle_at);
DUMMY(clock_adjtime);
DUMMY(syncfs);
DUMMY(setns);
DUMMY(process_vm_readv);
DUMMY(process_vm_writev);

2
sys/amd64/linux32/syscalls.master
View File

@ -573,7 +573,7 @@
341 AUE_NULL STD { int linux_name_to_handle_at(void); }
342 AUE_NULL STD { int linux_open_by_handle_at(void); }
343 AUE_NULL STD { int linux_clock_adjtime(void); }
344 AUE_NULL STD { int linux_syncfs(void); }
344 AUE_SYNC STD { int linux_syncfs(l_int fd); }
345 AUE_NULL STD { int linux_sendmmsg(l_int s, \
struct l_mmsghdr *msg, l_uint vlen, \
l_uint flags); }

41
sys/compat/linux/linux_stats.c
View File

@ -32,6 +32,7 @@ __FBSDID("$FreeBSD$");
#include "opt_compat.h"
#include <sys/param.h>
#include <sys/capsicum.h>
#include <sys/dirent.h>
#include <sys/file.h>
#include <sys/filedesc.h>
@ -653,3 +654,43 @@ linux_newfstatat(struct thread *td, struct linux_newfstatat_args *args)
}
#endif /* __i386__ || (__amd64__ && COMPAT_LINUX32) */
int
linux_syncfs(struct thread *td, struct linux_syncfs_args *args)
{
cap_rights_t rights;
struct mount *mp;
struct vnode *vp;
int error, save;
error = fgetvp(td, args->fd, cap_rights_init(&rights, CAP_FSYNC), &vp);
if (error != 0)
/*
* Linux syncfs() returns only EBADF, however fgetvp()
* can return EINVAL in case of file descriptor does
* not represent a vnode. XXX.
*/
return (error);
mp = vp->v_mount;
mtx_lock(&mountlist_mtx);
error = vfs_busy(mp, MBF_MNTLSTLOCK);
if (error != 0) {
/* See comment above. */
mtx_unlock(&mountlist_mtx);
goto out;
}
if ((mp->mnt_flag & MNT_RDONLY) == 0 &&
vn_start_write(NULL, &mp, V_NOWAIT) == 0) {
save = curthread_pflags_set(TDP_SYNCIO);
vfs_msync(mp, MNT_NOWAIT);
VFS_SYNC(mp, MNT_NOWAIT);
curthread_pflags_restore(save);
vn_finished_write(mp);
}
vfs_unbusy(mp);
out:
vrele(vp);
return (error);
}

1
sys/i386/linux/linux_dummy.c
View File

@ -121,7 +121,6 @@ DUMMY(fanotify_mark);
DUMMY(name_to_handle_at);
DUMMY(open_by_handle_at);
DUMMY(clock_adjtime);
DUMMY(syncfs);
DUMMY(setns);
DUMMY(process_vm_readv);
DUMMY(process_vm_writev);

2
sys/i386/linux/syscalls.master
View File

@ -581,7 +581,7 @@
341 AUE_NULL STD { int linux_name_to_handle_at(void); }
342 AUE_NULL STD { int linux_open_by_handle_at(void); }
343 AUE_NULL STD { int linux_clock_adjtime(void); }
344 AUE_NULL STD { int linux_syncfs(void); }
344 AUE_SYNC STD { int linux_syncfs(l_int fd); }
345 AUE_NULL STD { int linux_sendmmsg(l_int s, \
struct l_mmsghdr *msg, l_uint vlen, \
l_uint flags); }