diff options
| author | cinap_lenrek <cinap_lenrek@felloff.net> | 2018-02-14 20:35:36 +0100 |
|---|---|---|
| committer | cinap_lenrek <cinap_lenrek@felloff.net> | 2018-02-14 20:35:36 +0100 |
| commit | b19280009679f31bd3cf05a9a7df95ef121cef0b (patch) | |
| tree | 18e9d9ba420819d13125a09a9da568511c36a807 /sys | |
| parent | df6a30f3c0e2be41161101db0d62f5c02d93bbc0 (diff) | |
ftpfs: no caching by default, add -c flag to enable it (patch by mycroftiv)
Diffstat (limited to 'sys')
| -rw-r--r-- | sys/man/4/ftpfs | 15 | ||||
| -rw-r--r-- | sys/src/cmd/ip/ftpfs/ftpfs.c | 6 |
2 files changed, 13 insertions, 8 deletions
diff --git a/sys/man/4/ftpfs b/sys/man/4/ftpfs index 0a827b0ee..e1f37c537 100644 --- a/sys/man/4/ftpfs +++ b/sys/man/4/ftpfs @@ -4,7 +4,7 @@ ftpfs \- file transfer protocol (FTP) file system .SH SYNOPSIS .B ftpfs [ -.B -/dqnt +.B -/dqntc ] [ .B -m @@ -90,6 +90,10 @@ To avoid seeing startup messages from the server use option To see all messages from the server use option .BR -d . .PP +By default ftpfs only caches while a file operation is in progress. The +.BR -c +flag enables caching, increasing performance but allowing outdated file and directory data to persist. +.PP Some systems will hangup an ftp connection that has no activity for a given period. The .BR -K @@ -183,13 +187,8 @@ only one directory, usually However, walking to any valid directory on that machine will succeed and cause that directory entry to appear under the mount point. .PP -.I Ftpfs -caches files and directories. A directory will fall from the cache -after 5 quiescent minutes or if the local user changes the -directory by writing or removing a file. -Otherwise, remote -changes to the directory that occur after the directory has -been cached might not be immediately visible. +If caching is active, remote +changes that have been cached will not be visible. Attempting to walk to .IB directory /.flush.ftpfs will flush diff --git a/sys/src/cmd/ip/ftpfs/ftpfs.c b/sys/src/cmd/ip/ftpfs/ftpfs.c index b67dde99e..e254284c4 100644 --- a/sys/src/cmd/ip/ftpfs/ftpfs.c +++ b/sys/src/cmd/ip/ftpfs/ftpfs.c @@ -85,6 +85,7 @@ char *nouid = "?uid?"; char *nosuchfile = "file does not exist"; char *keyspec = ""; +int docache = 0; void usage(void) @@ -149,6 +150,9 @@ main(int argc, char *argv[]) case 'q': quiet = 1; break; + case 'c': + docache = 1; + break; } ARGEND if(argc != 1) usage(); @@ -582,6 +586,8 @@ rclunk(Fid *f) f->node->opens--; } f->busy = 0; + if(!docache && ISCACHED(f->node)) + uncache(f->node); return 0; } |