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NAME | SYNOPSIS | DESCRIPTION | RETURN VALUE | SEE ALSO | COLOPHON |
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SD_BUS_MESSAGE_READ_STRV(3)bus_message_read_strvBUS_MESSAGE_READ_STRV(3)
sd_bus_message_read_strv, sd_bus_message_read_strv_extend -
Access an array of strings in a message
#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);
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.
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.
systemd(1), sd-bus(3), sd_bus_message_read(3)
This page is part of the systemd (systemd system and service
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⟨http://www.freedesktop.org/wiki/Software/systemd⟩. If you have
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This page was obtained from the project's upstream Git repository
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systemd 252 SD_BUS_MESSAGE_READ_STRV(3)
Pages that refer to this page: sd-bus(3), sd_bus_message_read_array(3), systemd.directives(7), systemd.index(7)
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