sd_bus_message_read_strv, sd_bus_message_read_strv_extend — Access an array of strings in a message
sd_bus_message_read_strv() reads an array of string-like items from the
m. The "read pointer" in the message must be right before an array of
strings (D-Bus type "
as"), object paths (D-Bus type "
signatures (D-Bus type "
ag"). On success, a pointer to a
NULL-terminated array of strings (strv) is returned in the output parameter
l. Note that ownership of this array is transferred to the caller. Hence, the
caller is responsible for freeing this array and its contents.
sd_bus_message_read_strv_extend() is similar, but the second parameter is an
input-output parameter. If
NULL, if behaves identically
*l must point to a
strv, which will be reallocated and extended with additional strings. This function is particularly
useful when combining multiple lists of strings in a message or messages into a single array of strings.
On success, these functions return a non-negative integer. On failure, they return a negative errno-style error code.