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| author | Florian Weimer <fweimer@redhat.com> | 2017-08-28 11:31:23 +0200 |
|---|---|---|
| committer | Florian Weimer <fweimer@redhat.com> | 2017-08-28 11:58:52 +0200 |
| commit | 2dba5ce7b8115d6a2789bf279892263621088e74 (patch) | |
| tree | 14d4eea70f46985b3fdcfd0d20d5263b128402e2 /ChangeLog | |
| parent | 5f3b183d198b39ca993a41aadb02bddd9fde078d (diff) | |
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<bits/syscall.h>: Use an arch-independent system call list on Linux
This commit changes the way the list of SYS_* system call macros is
created on Linux. glibc now contains a list of all known system
calls, and the generated <bits/syscall.h> file defines the SYS_ macro
only if the correspnding __NR_ macro is defined by the kernel headers.
As a result, glibc does not have to be rebuilt to pick up system calls
if the glibc sources already know about them. This means that glibc
can be built with older kernel headers, and if the installed kernel
headers are upgraded afterwards, additional SYS_ macros become
available as long as glibc has a record for those system calls.
Diffstat (limited to 'ChangeLog')
| -rw-r--r-- | ChangeLog | 22 |
1 files changed, 22 insertions, 0 deletions
@@ -1,3 +1,25 @@ +2017-08-28 Florian Weimer <fweimer@redhat.com> + + Store supported list of SYS_* system calls in the source tree. + * sysdeps/unix/sysv/linux/Makefile [$(subdir) = misc] + (bits/syscall.h): Generate from list file. + [$(subdir) = misc] (before-compile): Add bits/syscall.h. + [$(subdir) = misc] (tests): Add tst-syscall-list. + [$(subdir) = misc] (tests-special): Add tst-syscall-list.out + [$(subdir) = misc] (tst-syscall-list-macros.list) + [$(subdir) = misc] (tst-syscall-list-nr.list) + (tst-syscall-list-sys.list): Helper targets for new + tst-syscall-list test. + [$(subdir) = misc] (tst-syscall-list.out): Run test script + tst-syscall-list.sh. + [$(subdir) = misc] (bits/syscall%h, bits/syscall%d): Remove + target. Do not include bits/syscall.d. + [$(subdir) = misc] (generated): Do not update. + * sysdeps/unix/sysv/linux/syscall-names.list: New file. + * sysdeps/unix/sysv/linux/gen-syscall-h.awk: Likewise. + * sysdeps/unix/sysv/linux/filter-nr-syscalls.awk: Likewise. + * sysdeps/unix/sysv/linux/tst-syscall-list.sh: Likewise. + 2017-08-27 Paul Pluzhnikov <ppluzhnikov@google.com> * stdlib/Makefile (tst-atexit, tst-at_quick_exit): New tests. |