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38 .Fn getrandom "void *buf" "size_t buflen" "unsigned int flags"
49 argument may include zero or more of the following:
50 .Bl -tag -width _GRND_NONBLOCK_
54 instead of blocking, if the
56 device has not yet been seeded.
59 will block until the device is seeded.
61 This flag does nothing on
71 device has been seeded, reads of up to 256 bytes will always return as many
72 bytes as requested and will not be interrupted by signals.
75 Upon successful completion, the number of bytes which were actually read is
77 For requests larger than 256 bytes, this can be fewer bytes than were
79 Otherwise, -1 is returned and the global variable
81 is set to indicate the error.
85 operation returns the following errors:
92 device was not yet seeded.
96 parameter points to an invalid address.
98 The sleep was interrupted by a signal.
116 It is present in Linux.
120 system call first appeared in