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authorJeremy Kerr <jk@ozlabs.org>2013-05-01 09:18:44 +0800
committerJeremy Kerr <jk@ozlabs.org>2013-05-06 09:02:12 +0800
commit6b87c9c7776796c766e3dcbdb32f5d292f7125d5 (patch)
tree3b466780f23ce63c4acc95a01379e8d95cd633df /lib/pb-protocol
parentab4ca06537f10b768b2e81a178273e9509de0b07 (diff)
downloadtalos-petitboot-6b87c9c7776796c766e3dcbdb32f5d292f7125d5.tar.gz
talos-petitboot-6b87c9c7776796c766e3dcbdb32f5d292f7125d5.zip
protocol: Add boot_status (de-)serialisation functions
Add code to the pb-protocol layer to serialise and deserialise boot_status messages. Signed-off-by: Jeremy Kerr <jk@ozlabs.org>
Diffstat (limited to 'lib/pb-protocol')
-rw-r--r--lib/pb-protocol/pb-protocol.c78
-rw-r--r--lib/pb-protocol/pb-protocol.h6
2 files changed, 84 insertions, 0 deletions
diff --git a/lib/pb-protocol/pb-protocol.c b/lib/pb-protocol/pb-protocol.c
index ded35eb..2792bf8 100644
--- a/lib/pb-protocol/pb-protocol.c
+++ b/lib/pb-protocol/pb-protocol.c
@@ -188,6 +188,14 @@ int pb_protocol_boot_len(const struct boot_command *boot)
4 + optional_strlen(boot->boot_args);
}
+int pb_protocol_boot_status_len(const struct boot_status *status)
+{
+ return 4 +
+ 4 + optional_strlen(status->message) +
+ 4 + optional_strlen(status->detail) +
+ 4;
+}
+
int pb_protocol_serialise_device(const struct device *dev,
char *buf, int buf_len)
{
@@ -240,6 +248,26 @@ int pb_protocol_serialise_boot_command(const struct boot_command *boot,
return 0;
}
+int pb_protocol_serialise_boot_status(const struct boot_status *status,
+ char *buf, int buf_len)
+{
+ char *pos = buf;
+
+ *(uint32_t *)pos = __cpu_to_be32(status->type);
+ pos += sizeof(uint32_t);
+
+ pos += pb_protocol_serialise_string(pos, status->message);
+ pos += pb_protocol_serialise_string(pos, status->detail);
+
+ *(uint32_t *)pos = __cpu_to_be32(status->type);
+ pos += sizeof(uint32_t);
+
+ assert(pos <= buf + buf_len);
+ (void)buf_len;
+
+ return 0;
+}
+
int pb_protocol_write_message(int fd, struct pb_protocol_message *message)
{
int total_len, rc;
@@ -426,3 +454,53 @@ int pb_protocol_deserialise_boot_command(struct boot_command *cmd,
out:
return rc;
}
+
+int pb_protocol_deserialise_boot_status(struct boot_status *status,
+ const struct pb_protocol_message *message)
+{
+ unsigned int len;
+ const char *pos;
+ int rc = -1;
+
+ len = message->payload_len;
+ pos = message->payload;
+
+ /* first up, the type enum... */
+ if (len < sizeof(uint32_t))
+ goto out;
+
+ status->type = __be32_to_cpu(*(uint32_t *)(pos));
+
+ switch (status->type) {
+ case BOOT_STATUS_ERROR:
+ case BOOT_STATUS_INFO:
+ break;
+ default:
+ goto out;
+ }
+
+ pos += sizeof(uint32_t);
+ len -= sizeof(uint32_t);
+
+ /* message and detail strings */
+ if (read_string(status, &pos, &len, &status->message))
+ goto out;
+
+ if (read_string(status, &pos, &len, &status->detail))
+ goto out;
+
+ /* and finally, progress */
+ if (len < sizeof(uint32_t))
+ goto out;
+
+ status->progress = __be32_to_cpu(*(uint32_t *)(pos));
+
+ /* clamp to 100% */
+ if (status->progress > 100)
+ status->progress = 100;
+
+ rc = 0;
+
+out:
+ return rc;
+}
diff --git a/lib/pb-protocol/pb-protocol.h b/lib/pb-protocol/pb-protocol.h
index 4451700..0390f66 100644
--- a/lib/pb-protocol/pb-protocol.h
+++ b/lib/pb-protocol/pb-protocol.h
@@ -31,6 +31,7 @@ void pb_protocol_dump_device(const struct device *dev, const char *text,
int pb_protocol_device_len(const struct device *dev);
int pb_protocol_boot_option_len(const struct boot_option *opt);
int pb_protocol_boot_len(const struct boot_command *boot);
+int pb_protocol_boot_status_len(const struct boot_status *status);
int pb_protocol_device_cmp(const struct device *a, const struct device *b);
int pb_protocol_boot_option_cmp(const struct boot_option *a,
@@ -46,6 +47,8 @@ int pb_protocol_serialise_boot_option(const struct boot_option *opt,
char *buf, int buf_len);
int pb_protocol_serialise_boot_command(const struct boot_command *boot,
char *buf, int buf_len);
+int pb_protocol_serialise_boot_status(const struct boot_status *status,
+ char *buf, int buf_len);
int pb_protocol_write_message(int fd, struct pb_protocol_message *message);
@@ -63,4 +66,7 @@ int pb_protocol_deserialise_boot_option(struct boot_option *opt,
int pb_protocol_deserialise_boot_command(struct boot_command *cmd,
const struct pb_protocol_message *message);
+int pb_protocol_deserialise_boot_status(struct boot_status *status,
+ const struct pb_protocol_message *message);
+
#endif /* _PB_PROTOCOL_H */
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