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| author | Yu Watanabe <watanabe.yu+github@gmail.com> | 2022-09-30 03:37:02 +0900 |
|---|---|---|
| committer | Yu Watanabe <watanabe.yu+github@gmail.com> | 2022-10-02 23:05:05 +0900 |
| commit | 9d2d346aaeda53c3dc0c4b3077ec2e39fdfa61c4 (patch) | |
| tree | 1061b0a43496b1108d19527b08e74a905f566547 /src/libsystemd-network/dhcp6-option.h | |
| parent | 045422384093b97d21ae6296bd651555d9eeebea (diff) | |
| download | systemd-9d2d346aaeda53c3dc0c4b3077ec2e39fdfa61c4.tar.gz | |
sd-dhcp6-client: allow to build large packet
Previously, the maximum packet size was hardcoded with 512 + size of
the DHCP header. This makes the packet size increased when necessary.
See option_append_hdr().
Previously, all functions which append DHCP options took the head of the
unused area of the packet, and the size of the free area.
However, with this change, the buffer for the whole packet may be
reallocated, hence now they take the head of the packet and the offset
to the free area.
Fixes #24851.
Diffstat (limited to 'src/libsystemd-network/dhcp6-option.h')
| -rw-r--r-- | src/libsystemd-network/dhcp6-option.h | 12 |
1 files changed, 6 insertions, 6 deletions
diff --git a/src/libsystemd-network/dhcp6-option.h b/src/libsystemd-network/dhcp6-option.h index d044222124..36841dd270 100644 --- a/src/libsystemd-network/dhcp6-option.h +++ b/src/libsystemd-network/dhcp6-option.h @@ -72,13 +72,13 @@ DEFINE_TRIVIAL_CLEANUP_FUNC(DHCP6IA*, dhcp6_ia_free); bool dhcp6_option_can_request(uint16_t option); -int dhcp6_option_append(uint8_t **buf, size_t *buflen, uint16_t code, +int dhcp6_option_append(uint8_t **buf, size_t *offset, uint16_t code, size_t optlen, const void *optval); -int dhcp6_option_append_ia(uint8_t **buf, size_t *buflen, const DHCP6IA *ia); -int dhcp6_option_append_fqdn(uint8_t **buf, size_t *buflen, const char *fqdn); -int dhcp6_option_append_user_class(uint8_t **buf, size_t *buflen, char * const *user_class); -int dhcp6_option_append_vendor_class(uint8_t **buf, size_t *buflen, char * const *vendor_class); -int dhcp6_option_append_vendor_option(uint8_t **buf, size_t *buflen, OrderedSet *vendor_options); +int dhcp6_option_append_ia(uint8_t **buf, size_t *offset, const DHCP6IA *ia); +int dhcp6_option_append_fqdn(uint8_t **buf, size_t *offset, const char *fqdn); +int dhcp6_option_append_user_class(uint8_t **buf, size_t *offset, char * const *user_class); +int dhcp6_option_append_vendor_class(uint8_t **buf, size_t *offset, char * const *vendor_class); +int dhcp6_option_append_vendor_option(uint8_t **buf, size_t *offset, OrderedSet *vendor_options); int dhcp6_option_parse( const uint8_t *buf, |