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| author | Eugene Syromyatnikov <evgsyr@gmail.com> | 2018-09-19 19:12:22 +0200 |
|---|---|---|
| committer | Michael Kerrisk <mtk.manpages@gmail.com> | 2019-02-25 15:08:51 +0100 |
| commit | ff5fa0ace32c326aa3c0423f2b561ca0db5f211f (patch) | |
| tree | f3d8050ce2ecd02805cbb1a40628ae49e92a5e7b | |
| parent | a5819baa01d1f37cd226540f23d94818a16f264a (diff) | |
| download | man-pages-ff5fa0ace32c326aa3c0423f2b561ca0db5f211f.tar.gz | |
getrlimit.2: Correct information about large limits on 32-bit architectures
Signed-off-by: Eugene Syromyatnikov <evgsyr@gmail.com>
Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>
| -rw-r--r-- | man2/getrlimit.2 | 15 |
1 files changed, 5 insertions, 10 deletions
diff --git a/man2/getrlimit.2 b/man2/getrlimit.2 index f488af4880..de374f514f 100644 --- a/man2/getrlimit.2 +++ b/man2/getrlimit.2 @@ -734,7 +734,11 @@ and .BR setrlimit () system calls is a (32-bit) .IR "unsigned long" . -Furthermore, in Linux versions before 2.6.36, +.\" Linux still uses long for limits internally: +.\" c022a0acad534fd5f5d5f17280f6d4d135e74e81 +.\" kernel/sys.c:do_prlimit() still uses struct rlimit which +.\" uses kernel_ulong_t for its members, i.e. 32-bit on 32-bit kernel. +Furthermore, in Linux, the kernel represents resource limits on 32-bit platforms as .IR "unsigned long" . However, a 32-bit data type is not wide enough. @@ -760,15 +764,6 @@ wrapper function silently converted the limit value to .BR RLIM_INFINITY . In other words, the requested resource limit setting was silently ignored. .PP -This problem was addressed in Linux 2.6.36 with two principal changes: -.IP * 3 -the addition of a new kernel representation of resource limits that -uses 64 bits, even on 32-bit platforms; -.IP * -the addition of the -.BR prlimit () -system call, which employs 64-bit values for its resource limit arguments. -.PP Since version 2.13, .\" https://www.sourceware.org/bugzilla/show_bug.cgi?id=12201 glibc works around the limitations of the |