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author | Trond Myklebust <trond.myklebust@primarydata.com> | 2017-02-22 18:35:33 -0500 |
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committer | J. Bruce Fields <bfields@redhat.com> | 2017-02-27 18:04:17 -0500 |
commit | ff7d11797e728efbd1da8cfaa6f7c37585784ca5 (patch) | |
tree | 7ba761667ee270062c72519b07bb7b75c6a67e1e /fs/nfsd/nfsctl.c | |
parent | d3635ff07e8ca598d44f72bbf5d6c65b8ebeeb46 (diff) | |
download | linux-ff7d11797e728efbd1da8cfaa6f7c37585784ca5.tar.bz2 |
nfsd: Fix display of the version string
The current display code assumes that v4 minor version 0 is tracked by
the call to nfsd_vers(). Now it is tracked by nfsd_minorversion(), and
so we need to adjust the display code.
Signed-off-by: Trond Myklebust <trond.myklebust@primarydata.com>
Signed-off-by: J. Bruce Fields <bfields@redhat.com>
Diffstat (limited to 'fs/nfsd/nfsctl.c')
-rw-r--r-- | fs/nfsd/nfsctl.c | 56 |
1 files changed, 26 insertions, 30 deletions
diff --git a/fs/nfsd/nfsctl.c b/fs/nfsd/nfsctl.c index 4bbba88416dc..73e75ac90525 100644 --- a/fs/nfsd/nfsctl.c +++ b/fs/nfsd/nfsctl.c @@ -536,6 +536,19 @@ out_free: return rv; } +static ssize_t +nfsd_print_version_support(char *buf, int remaining, const char *sep, + unsigned vers, unsigned minor) +{ + const char *format = (minor == 0) ? "%s%c%u" : "%s%c%u.%u"; + bool supported = !!nfsd_vers(vers, NFSD_TEST); + + if (vers == 4 && !nfsd_minorversion(minor, NFSD_TEST)) + supported = false; + return snprintf(buf, remaining, format, sep, + supported ? '+' : '-', vers, minor); +} + static ssize_t __write_versions(struct file *file, char *buf, size_t size) { char *mesg = buf; @@ -598,40 +611,23 @@ static ssize_t __write_versions(struct file *file, char *buf, size_t size) len = 0; sep = ""; remaining = SIMPLE_TRANSACTION_LIMIT; - for (num=2 ; num <= 4 ; num++) - if (nfsd_vers(num, NFSD_AVAIL)) { - len = snprintf(buf, remaining, "%s%c%d", sep, - nfsd_vers(num, NFSD_TEST)?'+':'-', - num); - sep = " "; - - if (len >= remaining) - break; - remaining -= len; - buf += len; - tlen += len; - } - if (nfsd_vers(4, NFSD_AVAIL)) - for (minor = 0; minor <= NFSD_SUPPORTED_MINOR_VERSION; - minor++) { - if (minor == 0 && nfsd_minorversion(minor, NFSD_TEST)) - /* for backward compatibility, don't report - * +4.0 - */ - continue; - len = snprintf(buf, remaining, " %c4.%u", - (nfsd_vers(4, NFSD_TEST) && - nfsd_minorversion(minor, NFSD_TEST)) ? - '+' : '-', - minor); - + for (num=2 ; num <= 4 ; num++) { + if (!nfsd_vers(num, NFSD_AVAIL)) + continue; + minor = 0; + do { + len = nfsd_print_version_support(buf, remaining, + sep, num, minor); if (len >= remaining) - break; + goto out; remaining -= len; buf += len; tlen += len; - } - + minor++; + sep = " "; + } while (num == 4 && minor <= NFSD_SUPPORTED_MINOR_VERSION); + } +out: len = snprintf(buf, remaining, "\n"); if (len >= remaining) return -EINVAL; |