Reduce diff lines between vti and vti6 help printing code.
Use @struct link_util ->id field to print correct link help: all callers
now pass this data structure to vti_print_help().
Get rid of custom print_usage() and usage() functions and use
vti_print_help() directly, return from function on "... type
<help|garbage>" instead of exit(2).
Signed-off-by: Serhey Popovych <serhe.popov...@gmail.com>
---
ip/link_vti.c | 42 ++++++++++++++++++------------------------
ip/link_vti6.c | 34 +++++++++++++++-------------------
2 files changed, 33 insertions(+), 43 deletions(-)
diff --git a/ip/link_vti.c b/ip/link_vti.c
index 49b87e9..f128e6b 100644
--- a/ip/link_vti.c
+++ b/ip/link_vti.c
@@ -23,29 +23,27 @@
#include "ip_common.h"
#include "tunnel.h"
-
-static void print_usage(FILE *f)
+static void vti_print_help(struct link_util *lu, int argc, char **argv, FILE
*f)
{
fprintf(f,
- "Usage: ... vti [ remote ADDR ]\n"
- " [ local ADDR ]\n"
- " [ [i|o]key KEY ]\n"
- " [ dev PHYS_DEV ]\n"
- " [ fwmark MARK ]\n"
+ "Usage: ... %-4s [ remote ADDR ]\n",
+ lu->id
+ );
+ fprintf(f,
+ " [ local ADDR ]\n"
+ " [ [i|o]key KEY ]\n"
+ " [ dev PHYS_DEV ]\n"
+ " [ fwmark MARK ]\n"
"\n"
- "Where: ADDR := { IP_ADDRESS }\n"
+ );
+ fprintf(f,
+ "Where: ADDR := { IP%s_ADDRESS }\n"
" KEY := { DOTTED_QUAD | NUMBER }\n"
- " MARK := { 0x0..0xffffffff }\n"
+ " MARK := { 0x0..0xffffffff }\n",
+ ""
);
}
-static void usage(void) __attribute__((noreturn));
-static void usage(void)
-{
- print_usage(stderr);
- exit(-1);
-}
-
static int vti_parse_opt(struct link_util *lu, int argc, char **argv,
struct nlmsghdr *n)
{
@@ -147,8 +145,10 @@ get_failed:
NEXT_ARG();
if (get_u32(&fwmark, *argv, 0))
invarg("invalid fwmark\n", *argv);
- } else
- usage();
+ } else {
+ vti_print_help(lu, argc, argv, stderr);
+ return -1;
+ }
argc--; argv++;
}
@@ -208,12 +208,6 @@ static void vti_print_opt(struct link_util *lu, FILE *f,
struct rtattr *tb[])
}
}
-static void vti_print_help(struct link_util *lu, int argc, char **argv,
- FILE *f)
-{
- print_usage(f);
-}
-
struct link_util vti_link_util = {
.id = "vti",
.maxattr = IFLA_VTI_MAX,
diff --git a/ip/link_vti6.c b/ip/link_vti6.c
index d1fbec5..109f3e8 100644
--- a/ip/link_vti6.c
+++ b/ip/link_vti6.c
@@ -24,28 +24,28 @@
#include "ip_common.h"
#include "tunnel.h"
-static void print_usage(FILE *f)
+static void vti6_print_help(struct link_util *lu, int argc, char **argv,
+ FILE *f)
{
fprintf(f,
- "Usage: ... vti6 [ remote ADDR ]\n"
+ "Usage: ... %-4s [ remote ADDR ]\n",
+ lu->id
+ );
+ fprintf(f,
" [ local ADDR ]\n"
" [ [i|o]key KEY ]\n"
" [ dev PHYS_DEV ]\n"
" [ fwmark MARK ]\n"
"\n"
- "Where: ADDR := { IPV6_ADDRESS }\n"
+ );
+ fprintf(f,
+ "Where: ADDR := { IP%s_ADDRESS }\n"
" KEY := { DOTTED_QUAD | NUMBER }\n"
- " MARK := { 0x0..0xffffffff }\n"
+ " MARK := { 0x0..0xffffffff }\n",
+ "V6"
);
}
-static void usage(void) __attribute__((noreturn));
-static void usage(void)
-{
- print_usage(stderr);
- exit(-1);
-}
-
static int vti6_parse_opt(struct link_util *lu, int argc, char **argv,
struct nlmsghdr *n)
{
@@ -153,8 +153,10 @@ get_failed:
NEXT_ARG();
if (get_u32(&fwmark, *argv, 0))
invarg("invalid fwmark\n", *argv);
- } else
- usage();
+ } else {
+ vti6_print_help(lu, argc, argv, stderr);
+ return -1;
+ }
argc--; argv++;
}
@@ -214,12 +216,6 @@ static void vti6_print_opt(struct link_util *lu, FILE *f,
struct rtattr *tb[])
}
}
-static void vti6_print_help(struct link_util *lu, int argc, char **argv,
- FILE *f)
-{
- print_usage(f);
-}
-
struct link_util vti6_link_util = {
.id = "vti6",
.maxattr = IFLA_VTI_MAX,
--
1.7.10.4
