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2019-10-28add time64 symbol name redirects to public headers, under arch controlRich Felker1-0/+5
a _REDIR_TIME64 macro is introduced, which the arch's alltypes.h is expected to define, to control redirection of symbol names for interfaces that involve time_t and derived types. this ensures that object files will only be linked to libc interfaces matching the ABI whose headers they were compiled against. along with time32 compat shims, which will be introduced separately, the redirection also makes it possible for a single libc (static or shared) to be used with object files produced with either the old (32-bit time_t) headers or the new ones after 64-bit time_t switchover takes place. mixing of such object files (or shared libraries) in the same program will also be possible, but must be done with care; ABI between libc and a consumer of the libc interfaces is guaranteed to match by the the symbol name redirection, but pairwise ABI between consumers of libc that define interfaces between each other in terms of time_t is not guaranteed to match. this change adds a dependency on an additional "GNU C" feature to the public headers for existing 32-bit archs, which is generally undesirable; however, the feature is one which glibc has depended on for a long time, and thus which any viable alternative compiler is going to need to provide. 64-bit archs are not affected, nor will future 32-bit archs be, regardless of whether they are "new" on the kernel side (e.g. riscv32) or just newly-added (e.g. a new sparc or xtensa port). the same applies to newly-added ABIs for existing machine-level archs.
2013-04-01add ADJ_SETOFFSET timex mode bit (new in linux v2.6.39)Szabolcs Nagy1-0/+1
2013-01-12add MOD_TAI to sys/timex.h and update STA_RONLYSzabolcs Nagy1-1/+2
2012-09-16add clock_adjtime, remap_file_pages, and syncfs syscall wrappersRich Felker1-0/+5
patch by Justin Cormack, with slight modification
2011-09-20fix some header typosRich Felker1-1/+1
2011-03-18various legacy and linux-specific stuffRich Felker1-0/+91
this commit is part of an effort to make more of busybox work out-of-the-box.