int stime(const time_t *t);
Feature Test Macro Requirements for glibc (see feature_test_macros(7)):
Since glibc 2.19:
Glibc 2.19 and earlier:
stime() sets the system's idea of the time and date. The time, pointed to
by t, is measured in seconds since the Epoch, 1970-01-01 00:00:00 +0000
(UTC). stime() may be executed only by the superuser.
On success, zero is returned. On error, -1 is returned, and errno is set
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- Error in getting information from user space.
- The calling process has insufficient privilege. Under Linux, the
CAP_SYS_TIME privilege is required.