From de05c557b24c7dffc6d392e3db120cf11c9f6ae7 Mon Sep 17 00:00:00 2001 From: Pavel Emelyanov Date: Fri, 18 Jul 2008 04:07:21 -0700 Subject: [PATCH] proc: consolidate per-net single_open callers There are already 7 of them - time to kill some duplicate code. Signed-off-by: Pavel Emelyanov Signed-off-by: David S. Miller --- fs/proc/proc_net.c | 24 +++++++++++++++ include/linux/seq_file_net.h | 2 ++ net/ipv4/fib_trie.c | 13 +------- net/ipv4/proc.c | 57 ++---------------------------------- net/ipv6/proc.c | 19 +----------- net/ipv6/route.c | 26 ++-------------- 6 files changed, 33 insertions(+), 108 deletions(-) diff --git a/fs/proc/proc_net.c b/fs/proc/proc_net.c index 83f357b30d71..ab232ad2e6f9 100644 --- a/fs/proc/proc_net.c +++ b/fs/proc/proc_net.c @@ -51,6 +51,30 @@ int seq_open_net(struct inode *ino, struct file *f, } EXPORT_SYMBOL_GPL(seq_open_net); +int single_open_net(struct inode *inode, struct file *file, + int (*show)(struct seq_file *, void *)) +{ + int err; + struct net *net; + + err = -ENXIO; + net = get_proc_net(inode); + if (net == NULL) + goto err_net; + + err = single_open(file, show, net); + if (err < 0) + goto err_open; + + return 0; + +err_open: + put_net(net); +err_net: + return err; +} +EXPORT_SYMBOL_GPL(single_open_net); + int seq_release_net(struct inode *ino, struct file *f) { struct seq_file *seq; diff --git a/include/linux/seq_file_net.h b/include/linux/seq_file_net.h index 4ac52542a563..87dcc0ecf6eb 100644 --- a/include/linux/seq_file_net.h +++ b/include/linux/seq_file_net.h @@ -14,6 +14,8 @@ struct seq_net_private { int seq_open_net(struct inode *, struct file *, const struct seq_operations *, int); +int single_open_net(struct inode *, struct file *file, + int (*show)(struct seq_file *, void *)); int seq_release_net(struct inode *, struct file *); static inline struct net *seq_file_net(struct seq_file *seq) { diff --git a/net/ipv4/fib_trie.c b/net/ipv4/fib_trie.c index f155a66d6ebf..6009df238ed9 100644 --- a/net/ipv4/fib_trie.c +++ b/net/ipv4/fib_trie.c @@ -2251,18 +2251,7 @@ static int fib_triestat_seq_show(struct seq_file *seq, void *v) static int fib_triestat_seq_open(struct inode *inode, struct file *file) { - int err; - struct net *net; - - net = get_proc_net(inode); - if (net == NULL) - return -ENXIO; - err = single_open(file, fib_triestat_seq_show, net); - if (err < 0) { - put_net(net); - return err; - } - return 0; + return single_open_net(inode, file, fib_triestat_seq_show); } static int fib_triestat_seq_release(struct inode *ino, struct file *f) diff --git a/net/ipv4/proc.c b/net/ipv4/proc.c index 554390431a4e..daf5d3c80cef 100644 --- a/net/ipv4/proc.c +++ b/net/ipv4/proc.c @@ -71,24 +71,7 @@ static int sockstat_seq_show(struct seq_file *seq, void *v) static int sockstat_seq_open(struct inode *inode, struct file *file) { - int err; - struct net *net; - - err = -ENXIO; - net = get_proc_net(inode); - if (net == NULL) - goto err_net; - - err = single_open(file, sockstat_seq_show, net); - if (err < 0) - goto err_open; - - return 0; - -err_open: - put_net(net); -err_net: - return err; + return single_open_net(inode, file, sockstat_seq_show); } static int sockstat_seq_release(struct inode *inode, struct file *file) @@ -397,24 +380,7 @@ static int snmp_seq_show(struct seq_file *seq, void *v) static int snmp_seq_open(struct inode *inode, struct file *file) { - int err; - struct net *net; - - err = -ENXIO; - net = get_proc_net(inode); - if (net == NULL) - goto err_net; - - err = single_open(file, snmp_seq_show, net); - if (err < 0) - goto err_open; - - return 0; - -err_open: - put_net(net); -err_net: - return err; + return single_open_net(inode, file, snmp_seq_show); } static int snmp_seq_release(struct inode *inode, struct file *file) @@ -469,24 +435,7 @@ static int netstat_seq_show(struct seq_file *seq, void *v) static int netstat_seq_open(struct inode *inode, struct file *file) { - int err; - struct net *net; - - err = -ENXIO; - net = get_proc_net(inode); - if (net == NULL) - goto err_net; - - err = single_open(file, netstat_seq_show, net); - if (err < 0) - goto err_open; - - return 0; - -err_open: - put_net(net); -err_net: - return err; + return single_open_net(inode, file, netstat_seq_show); } static int netstat_seq_release(struct inode *inode, struct file *file) diff --git a/net/ipv6/proc.c b/net/ipv6/proc.c index cbc7e514d3ec..29c5a79444c2 100644 --- a/net/ipv6/proc.c +++ b/net/ipv6/proc.c @@ -183,24 +183,7 @@ static int snmp6_seq_show(struct seq_file *seq, void *v) static int sockstat6_seq_open(struct inode *inode, struct file *file) { - int err; - struct net *net; - - err = -ENXIO; - net = get_proc_net(inode); - if (net == NULL) - goto err_net; - - err = single_open(file, sockstat6_seq_show, net); - if (err < 0) - goto err_open; - - return 0; - -err_open: - put_net(net); -err_net: - return err; + return single_open_net(inode, file, sockstat6_seq_show); } static int sockstat6_seq_release(struct inode *inode, struct file *file) diff --git a/net/ipv6/route.c b/net/ipv6/route.c index 5d6c166dfbb6..fb7ff8f0c6db 100644 --- a/net/ipv6/route.c +++ b/net/ipv6/route.c @@ -2416,18 +2416,7 @@ static int ipv6_route_show(struct seq_file *m, void *v) static int ipv6_route_open(struct inode *inode, struct file *file) { - int err; - struct net *net = get_proc_net(inode); - if (!net) - return -ENXIO; - - err = single_open(file, ipv6_route_show, net); - if (err < 0) { - put_net(net); - return err; - } - - return 0; + return single_open_net(inode, file, ipv6_route_show); } static int ipv6_route_release(struct inode *inode, struct file *file) @@ -2463,18 +2452,7 @@ static int rt6_stats_seq_show(struct seq_file *seq, void *v) static int rt6_stats_seq_open(struct inode *inode, struct file *file) { - int err; - struct net *net = get_proc_net(inode); - if (!net) - return -ENXIO; - - err = single_open(file, rt6_stats_seq_show, net); - if (err < 0) { - put_net(net); - return err; - } - - return 0; + return single_open_net(inode, file, rt6_stats_seq_show); } static int rt6_stats_seq_release(struct inode *inode, struct file *file) -- 2.30.2