From: Rob Landley <rlandley@parallels.com>
To: <linux-nfs@vger.kernel.org>, Pavel Emelyanov <xemul@parallels.com>
Subject: [PATCH] cleanup: factor out cut-and-paste code in options parsing.
Date: Thu, 3 Feb 2011 21:30:42 -0600 [thread overview]
Message-ID: <4D4B72E2.5070901@parallels.com> (raw)
From: Rob Landley <rlandley@parallels.com>
Factor out some cut-and-paste code in options parsing.
Signed-off-by: Rob Landley <rlandley@parallels.com>
---
add/remove: 2/0 grow/shrink: 1/2 up/down: 115/-956 (-841)
function old new delta
nfs_get_option_ul - 69 +69
nfs_get_option_str - 45 +45
nfs_kill_super 33 34 +1
nfs_alloc_parsed_mount_data 107 106 -1
nfs_parse_mount_options 3608 2653 -955
fs/nfs/super.c | 155 +++++++++++++----------------------------------
1 file changed, 44 insertions(+), 111 deletions(-)
diff --git a/fs/nfs/super.c b/fs/nfs/super.c
index b68c860..d103034 100644
--- a/fs/nfs/super.c
+++ b/fs/nfs/super.c
@@ -979,6 +979,27 @@ static int nfs_parse_security_flavors(char *value,
return 1;
}
+static int nfs_get_option_str(substring_t args[], char **option)
+{
+ kfree(*option);
+ *option = match_strdup(args);
+ return !option;
+}
+
+static int nfs_get_option_ul(substring_t args[], unsigned long *option)
+{
+ int rc;
+ char *string;
+
+ string = match_strdup(args);
+ if (string == NULL)
+ return -ENOMEM;
+ rc = strict_strtoul(string, 10, option);
+ kfree(string);
+
+ return rc;
+}
+
/*
* Error-check and convert a string of mount options from user space into
* a data structure. The whole mount string is processed; bad options are
@@ -1127,155 +1148,82 @@ static int nfs_parse_mount_options(char *raw,
* options that take numeric values
*/
case Opt_port:
- string = match_strdup(args);
- if (string == NULL)
- goto out_nomem;
- rc = strict_strtoul(string, 10, &option);
- kfree(string);
- if (rc != 0 || option > USHRT_MAX)
+ if (nfs_get_option_ul(args, &option) ||
+ option > USHRT_MAX)
goto out_invalid_value;
mnt->nfs_server.port = option;
break;
case Opt_rsize:
- string = match_strdup(args);
- if (string == NULL)
- goto out_nomem;
- rc = strict_strtoul(string, 10, &option);
- kfree(string);
- if (rc != 0)
+ if (nfs_get_option_ul(args, &option))
goto out_invalid_value;
mnt->rsize = option;
break;
case Opt_wsize:
- string = match_strdup(args);
- if (string == NULL)
- goto out_nomem;
- rc = strict_strtoul(string, 10, &option);
- kfree(string);
- if (rc != 0)
+ if (nfs_get_option_ul(args, &option))
goto out_invalid_value;
mnt->wsize = option;
break;
case Opt_bsize:
- string = match_strdup(args);
- if (string == NULL)
- goto out_nomem;
- rc = strict_strtoul(string, 10, &option);
- kfree(string);
- if (rc != 0)
+ if (nfs_get_option_ul(args, &option))
goto out_invalid_value;
mnt->bsize = option;
break;
case Opt_timeo:
- string = match_strdup(args);
- if (string == NULL)
- goto out_nomem;
- rc = strict_strtoul(string, 10, &option);
- kfree(string);
- if (rc != 0 || option == 0)
+ if (nfs_get_option_ul(args, &option) || option == 0)
goto out_invalid_value;
mnt->timeo = option;
break;
case Opt_retrans:
- string = match_strdup(args);
- if (string == NULL)
- goto out_nomem;
- rc = strict_strtoul(string, 10, &option);
- kfree(string);
- if (rc != 0 || option == 0)
+ if (nfs_get_option_ul(args, &option) || option == 0)
goto out_invalid_value;
mnt->retrans = option;
break;
case Opt_acregmin:
- string = match_strdup(args);
- if (string == NULL)
- goto out_nomem;
- rc = strict_strtoul(string, 10, &option);
- kfree(string);
- if (rc != 0)
+ if (nfs_get_option_ul(args, &option))
goto out_invalid_value;
mnt->acregmin = option;
break;
case Opt_acregmax:
- string = match_strdup(args);
- if (string == NULL)
- goto out_nomem;
- rc = strict_strtoul(string, 10, &option);
- kfree(string);
- if (rc != 0)
+ if (nfs_get_option_ul(args, &option))
goto out_invalid_value;
mnt->acregmax = option;
break;
case Opt_acdirmin:
- string = match_strdup(args);
- if (string == NULL)
- goto out_nomem;
- rc = strict_strtoul(string, 10, &option);
- kfree(string);
- if (rc != 0)
+ if (nfs_get_option_ul(args, &option))
goto out_invalid_value;
mnt->acdirmin = option;
break;
case Opt_acdirmax:
- string = match_strdup(args);
- if (string == NULL)
- goto out_nomem;
- rc = strict_strtoul(string, 10, &option);
- kfree(string);
- if (rc != 0)
+ if (nfs_get_option_ul(args, &option))
goto out_invalid_value;
mnt->acdirmax = option;
break;
case Opt_actimeo:
- string = match_strdup(args);
- if (string == NULL)
- goto out_nomem;
- rc = strict_strtoul(string, 10, &option);
- kfree(string);
- if (rc != 0)
+ if (nfs_get_option_ul(args, &option))
goto out_invalid_value;
mnt->acregmin = mnt->acregmax =
mnt->acdirmin = mnt->acdirmax = option;
break;
case Opt_namelen:
- string = match_strdup(args);
- if (string == NULL)
- goto out_nomem;
- rc = strict_strtoul(string, 10, &option);
- kfree(string);
- if (rc != 0)
+ if (nfs_get_option_ul(args, &option))
goto out_invalid_value;
mnt->namlen = option;
break;
case Opt_mountport:
- string = match_strdup(args);
- if (string == NULL)
- goto out_nomem;
- rc = strict_strtoul(string, 10, &option);
- kfree(string);
- if (rc != 0 || option > USHRT_MAX)
+ if (nfs_get_option_ul(args, &option) ||
+ option > USHRT_MAX)
goto out_invalid_value;
mnt->mount_server.port = option;
break;
case Opt_mountvers:
- string = match_strdup(args);
- if (string == NULL)
- goto out_nomem;
- rc = strict_strtoul(string, 10, &option);
- kfree(string);
- if (rc != 0 ||
+ if (nfs_get_option_ul(args, &option) ||
option < NFS_MNT_VERSION ||
option > NFS_MNT3_VERSION)
goto out_invalid_value;
mnt->mount_server.version = option;
break;
case Opt_nfsvers:
- string = match_strdup(args);
- if (string == NULL)
- goto out_nomem;
- rc = strict_strtoul(string, 10, &option);
- kfree(string);
- if (rc != 0)
+ if (nfs_get_option_ul(args, &option))
goto out_invalid_value;
switch (option) {
case NFS2_VERSION:
@@ -1295,12 +1243,7 @@ static int nfs_parse_mount_options(char *raw,
}
break;
case Opt_minorversion:
- string = match_strdup(args);
- if (string == NULL)
- goto out_nomem;
- rc = strict_strtoul(string, 10, &option);
- kfree(string);
- if (rc != 0)
+ if (nfs_get_option_ul(args, &option))
goto out_invalid_value;
if (option > NFS4_MAX_MINOR_VERSION)
goto out_invalid_value;
@@ -1336,21 +1279,18 @@ static int nfs_parse_mount_options(char *raw,
case Opt_xprt_udp:
mnt->flags &= ~NFS_MOUNT_TCP;
mnt->nfs_server.protocol = XPRT_TRANSPORT_UDP;
- kfree(string);
break;
case Opt_xprt_tcp6:
protofamily = AF_INET6;
case Opt_xprt_tcp:
mnt->flags |= NFS_MOUNT_TCP;
mnt->nfs_server.protocol = XPRT_TRANSPORT_TCP;
- kfree(string);
break;
case Opt_xprt_rdma:
/* vector side protocols to TCP */
mnt->flags |= NFS_MOUNT_TCP;
mnt->nfs_server.protocol = XPRT_TRANSPORT_RDMA;
xprt_load_transport(string);
- kfree(string);
break;
default:
dfprintk(MOUNT, "NFS: unrecognized "
@@ -1358,6 +1298,7 @@ static int nfs_parse_mount_options(char *raw,
kfree(string);
return 0;
}
+ kfree(string);
break;
case Opt_mountproto:
string = match_strdup(args);
@@ -1400,18 +1341,13 @@ static int nfs_parse_mount_options(char *raw,
goto out_invalid_address;
break;
case Opt_clientaddr:
- string = match_strdup(args);
- if (string == NULL)
+ if (nfs_get_option_str(args, &mnt->client_address))
goto out_nomem;
- kfree(mnt->client_address);
- mnt->client_address = string;
break;
case Opt_mounthost:
- string = match_strdup(args);
- if (string == NULL)
+ if (nfs_get_option_str(args,
+ &mnt->mount_server.hostname))
goto out_nomem;
- kfree(mnt->mount_server.hostname);
- mnt->mount_server.hostname = string;
break;
case Opt_mountaddr:
string = match_strdup(args);
@@ -1451,11 +1387,8 @@ static int nfs_parse_mount_options(char *raw,
};
break;
case Opt_fscache_uniq:
- string = match_strdup(args);
- if (string == NULL)
+ if (nfs_get_option_str(args, &mnt->fscache_uniq))
goto out_nomem;
- kfree(mnt->fscache_uniq);
- mnt->fscache_uniq = string;
mnt->options |= NFS_OPTION_FSCACHE;
break;
case Opt_local_lock:
reply other threads:[~2011-02-04 3:30 UTC|newest]
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