x SuSE Linux 13.1-RELEASE x
x SuSE Linux 13.1-RELEASEx
SD_BUS_MESSAGE_READ_STRV(3)sd_bus_message_read_strvSD_BUS_MESSAGE_READ_STRV(3)
NAME
sd_bus_message_read_strv, sd_bus_message_read_strv_extend - Access an
array of strings in a message
SYNOPSIS
#include <systemd/sd-bus.h>
int sd_bus_message_read_strv(sd_bus_message *m, char ***l);
int sd_bus_message_read_strv_extend(sd_bus_message *m, char ***l);
DESCRIPTION
sd_bus_message_read_strv() reads an array of string-like items from the
message m. The "read pointer" in the message must be right before an
array of strings (D-Bus type "as"), object paths (D-Bus type "ao"), or
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 *l is NULL, if behaves identically to
sd_bus_message_read_strv(). Otherwise, *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.
RETURN VALUE
On success, these functions return a non-negative integer. On failure,
they return a negative errno-style error code.
Errors
Returned errors may indicate the following problems:
-EINVAL
m or l are NULL.
-EPERM
The message is not sealed.
-EBADMSG
The message cannot be parsed.
-ENXIO
The message "read pointer" is not right before an array of the
appropriate type.
SEE ALSO
systemd(1), sd-bus(3), sd_bus_message_read(3)
systemd 254 SD_BUS_MESSAGE_READ_STRV(3)
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