1SD_BUS_MESSAGE_VERIFY_TYPE(s3d)_bus_message_verify_tySpDe_BUS_MESSAGE_VERIFY_TYPE(3)
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NAME

6       sd_bus_message_verify_type - Check if the message has specified type at
7       the current location
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SYNOPSIS

10       #include <systemd/sd-bus.h>
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12       int sd_bus_message_verify_type(sd_bus_message *m, char type,
13                                      const char* contents);
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DESCRIPTION

16       sd_bus_message_verify_type() checks if the complete type at the current
17       location in the message m matches the specified type and contents. If
18       non-zero, parameter type must be one of the types specified in
19       sd_bus_message_append(1). If non-null, parameter contents must be a
20       valid sequence of complete types. If both type and contents are
21       specified type must be a container type.
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23       If type is specified, the type in the message must match. If contents
24       is specified, the type in the message must be a container type with
25       this signature.
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RETURN VALUE

28       On success, this call returns true if the type matches and zero if not
29       (the message m contains different data or the end of the message has
30       been reached). On failure, it returns a negative errno-style error
31       code.
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33   Errors
34       Returned errors may indicate the following problems:
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36       -EINVAL
37           m or both type and contents are NULL.
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39           Arguments do not satisfy other constraints listed above.
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41       -EPERM
42           Message m is not sealed.
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NOTES

45       These APIs are implemented as a shared library, which can be compiled
46       and linked to with the libsystemd pkg-config(1) file.
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SEE ALSO

49       systemd(1), sd-bus(3), sd_bus_message_append(3)
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53systemd 249                                      SD_BUS_MESSAGE_VERIFY_TYPE(3)
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