diff options
Diffstat (limited to 'src/basic')
-rw-r--r-- | src/basic/parse-util.c | 26 | ||||
-rw-r--r-- | src/basic/parse-util.h | 1 |
2 files changed, 27 insertions, 0 deletions
diff --git a/src/basic/parse-util.c b/src/basic/parse-util.c index 5999c8140..ffad4ef45 100644 --- a/src/basic/parse-util.c +++ b/src/basic/parse-util.c @@ -11,12 +11,14 @@ #include <stdio.h> #include <stdlib.h> #include <string.h> +//#include <sys/socket.h> #include "alloc-util.h" #include "errno-list.h" //#include "extract-word.h" #include "locale-util.h" #include "macro.h" +//#include "missing.h" #include "parse-util.h" #include "process-util.h" #include "string-util.h" @@ -96,6 +98,30 @@ int parse_ifindex(const char *s, int *ret) { return 0; } +int parse_mtu(int family, const char *s, uint32_t *ret) { + uint64_t u; + size_t m; + int r; + + r = parse_size(s, 1024, &u); + if (r < 0) + return r; + + if (u > UINT32_MAX) + return -ERANGE; + + if (family == AF_INET6) + m = IPV6_MIN_MTU; /* This is 1280 */ + else + m = IPV4_MIN_MTU; /* For all other protocols, including 'unspecified' we assume the IPv4 minimal MTU */ + + if (u < m) + return -ERANGE; + + *ret = (uint32_t) u; + return 0; +} + int parse_size(const char *t, uint64_t base, uint64_t *size) { /* Soo, sometimes we want to parse IEC binary suffixes, and diff --git a/src/basic/parse-util.h b/src/basic/parse-util.h index dfc50f50b..9250b6fe0 100644 --- a/src/basic/parse-util.h +++ b/src/basic/parse-util.h @@ -22,6 +22,7 @@ int parse_dev(const char *s, dev_t *ret); int parse_pid(const char *s, pid_t* ret_pid); int parse_mode(const char *s, mode_t *ret); int parse_ifindex(const char *s, int *ret); +int parse_mtu(int family, const char *s, uint32_t *ret); int parse_size(const char *t, uint64_t base, uint64_t *size); #if 0 /// UNNEEDED by elogind |