diff options
Diffstat (limited to 'sys/kern/vfs_syscalls.c')
| -rw-r--r-- | sys/kern/vfs_syscalls.c | 19 |
1 files changed, 13 insertions, 6 deletions
diff --git a/sys/kern/vfs_syscalls.c b/sys/kern/vfs_syscalls.c index 9704e9c160a8..b805e147bd62 100644 --- a/sys/kern/vfs_syscalls.c +++ b/sys/kern/vfs_syscalls.c @@ -5050,15 +5050,16 @@ kern_copy_file_range(struct thread *td, int infd, off_t *inoffp, int outfd, size_t retlen; void *rl_rcookie, *rl_wcookie; off_t inoff, outoff, savinoff, savoutoff; - bool foffsets_locked; + bool foffsets_locked, foffsets_set; infp = outfp = NULL; rl_rcookie = rl_wcookie = NULL; foffsets_locked = false; + foffsets_set = false; error = 0; retlen = 0; - if (flags != 0) { + if ((flags & ~COPY_FILE_RANGE_USERFLAGS) != 0) { error = EINVAL; goto out; } @@ -5122,6 +5123,8 @@ kern_copy_file_range(struct thread *td, int infd, off_t *inoffp, int outfd, } foffset_lock_pair(infp1, &inoff, outfp1, &outoff, 0); foffsets_locked = true; + } else { + foffsets_set = true; } savinoff = inoff; savoutoff = outoff; @@ -5180,11 +5183,12 @@ out: vn_rangelock_unlock(invp, rl_rcookie); if (rl_wcookie != NULL) vn_rangelock_unlock(outvp, rl_wcookie); + if ((foffsets_locked || foffsets_set) && + (error == EINTR || error == ERESTART)) { + inoff = savinoff; + outoff = savoutoff; + } if (foffsets_locked) { - if (error == EINTR || error == ERESTART) { - inoff = savinoff; - outoff = savoutoff; - } if (inoffp == NULL) foffset_unlock(infp, inoff, 0); else @@ -5193,6 +5197,9 @@ out: foffset_unlock(outfp, outoff, 0); else *outoffp = outoff; + } else if (foffsets_set) { + *inoffp = inoff; + *outoffp = outoff; } if (outfp != NULL) fdrop(outfp, td); |