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| author | Adhemerval Zanella <adhemerval.zanella@linaro.org> | 2015-11-03 10:13:18 -0200 |
|---|---|---|
| committer | Adhemerval Zanella <adhemerval.zanella@linaro.org> | 2017-05-11 17:27:30 -0300 |
| commit | f6a191a6ee0313d61dffa70d86b033c5a598f907 (patch) | |
| tree | b4e748887ab6a83601122f9a9259bb34471dfc2e /include/unistd.h | |
| parent | cab6e5af9d51d4398522af782e20c743daf37461 (diff) | |
| download | glibc-f6a191a6ee0313d61dffa70d86b033c5a598f907.tar.gz glibc-f6a191a6ee0313d61dffa70d86b033c5a598f907.tar.xz glibc-f6a191a6ee0313d61dffa70d86b033c5a598f907.zip | |
Consolidate Linux read syscall
This patch consolidates the read Linux syscall implementation on
sysdeps/unix/sysv/linux/read.c. This leads to a different frame
pointer creation on some architectures:
* It fixes BZ#21428 on aarch64, since now the returned address
for the read syscall can be correctly found out by
backtrace_symbols.
* It makes tst-backtrace{5,6} fails on powerpc due an issue on
its custom backtrace implementation. It is fixed on subsequent
patch from this set.
Checked on i686-linux-gnu, x86_64-linux-gnu, x86_64-linux-gnux32,
arch64-linux-gnu, arm-linux-gnueabihf, and powerpc64le-linux-gnu.
[BZ #21428]
* include/unistd.h (read): Add hidden proto.
* io/Makefile (CFLAGS-read.c): New rule.
* nptl/Makefile (CFLAGS-read.c): New rule.
* sysdeps/unix/sysv/linux/read.c: New file.
Diffstat (limited to 'include/unistd.h')
| -rw-r--r-- | include/unistd.h | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/include/unistd.h b/include/unistd.h index f36759b24d..01556d3c7b 100644 --- a/include/unistd.h +++ b/include/unistd.h @@ -53,6 +53,7 @@ extern ssize_t __libc_pwrite64 (int __fd, const void *__buf, size_t __n, __off64_t __offset) attribute_hidden; extern ssize_t __libc_read (int __fd, void *__buf, size_t __n); libc_hidden_proto (__libc_read) +libc_hidden_proto (read) extern ssize_t __libc_write (int __fd, const void *__buf, size_t __n); libc_hidden_proto (__libc_write) extern int __pipe (int __pipedes[2]); |