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bionic/libc/arch-arm64/syscalls/___fsetxattr.S

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AArch64: Autogenerated syscalls for AArch64 This patch adds AArch64 syscalls, autogenerated using: ./libc/tools/gensyscalls.py Change-Id: I1cc60430423ecb52a35448bf2c358b82136b2f16 Signed-off-by: Serban Constantinescu <serban.constantinescu@arm.com>
2013-10-11 00:05:06 +02:00
/* Generated by gensyscalls.py. Do not edit. */
Stop using the non-uapi <linux/err.h> header file. We only need it for MAX_ERRNO, and it's time we had somewhere to put the little assembler utility macros we've been putting off writing. Change-Id: I9354d2e0dc47c689296a34b5b229fc9ba75f1a83
2013-11-07 19:31:05 +01:00
#include <private/bionic_asm.h>
AArch64: Autogenerated syscalls for AArch64 This patch adds AArch64 syscalls, autogenerated using: ./libc/tools/gensyscalls.py Change-Id: I1cc60430423ecb52a35448bf2c358b82136b2f16 Signed-off-by: Serban Constantinescu <serban.constantinescu@arm.com>
2013-10-11 00:05:06 +02:00
libc: Add O_PATH support for fgetxattr / fsetxattr Support O_PATH file descriptors when handling fgetxattr and fsetxattr. This avoids requiring file read access to pull extended attributes. This is needed to support O_PATH file descriptors when calling SELinux's fgetfilecon() call. In particular, this allows the querying and setting of SELinux file context by using something like the following code: int dirfd = open("/path/to/dir", O_DIRECTORY); int fd = openat(dirfd, "file", O_PATH | O_NOFOLLOW); char *context; fgetfilecon(fd, &context); This change was motivated by a comment in https://android-review.googlesource.com/#/c/152680/1/toys/posix/ls.c Change-Id: Ic0cdf9f9dd0e35a63b44a4c4a08400020041eddf
2015-05-31 22:43:13 +02:00
ENTRY(___fsetxattr)
AArch64: Autogenerated syscalls for AArch64 This patch adds AArch64 syscalls, autogenerated using: ./libc/tools/gensyscalls.py Change-Id: I1cc60430423ecb52a35448bf2c358b82136b2f16 Signed-off-by: Serban Constantinescu <serban.constantinescu@arm.com>
2013-10-11 00:05:06 +02:00
mov x8, __NR_fsetxattr
svc #0
cmn x0, #(MAX_ERRNO + 1)
cneg x0, x0, hi
Ensure __set_errno is still visible on LP32. The use of the .hidden directive to avoid going via the PLT for __set_errno had the side-effect of actually making __set_errno hidden (which is odd because assembler directives don't usually affect symbols defined in a different file --- you can't even create a weak reference to a symbol that's defined in a different file). This change switches the system call stubs over to a new always-hidden __set_errno_internal and has a visible __set_errno on LP32 just for binary compatibility with old NDK apps. (cherry-pick of 7efad83d430f4d824f2aaa75edea5106f6ff8aae.) Bug: 17423135 Change-Id: I6b6d7a05dda85f923d22e5ffd169a91e23499b7b
2014-09-09 00:25:01 +02:00
b.hi __set_errno_internal
AArch64: Autogenerated syscalls for AArch64 This patch adds AArch64 syscalls, autogenerated using: ./libc/tools/gensyscalls.py Change-Id: I1cc60430423ecb52a35448bf2c358b82136b2f16 Signed-off-by: Serban Constantinescu <serban.constantinescu@arm.com>
2013-10-11 00:05:06 +02:00
ret
libc: Add O_PATH support for fgetxattr / fsetxattr Support O_PATH file descriptors when handling fgetxattr and fsetxattr. This avoids requiring file read access to pull extended attributes. This is needed to support O_PATH file descriptors when calling SELinux's fgetfilecon() call. In particular, this allows the querying and setting of SELinux file context by using something like the following code: int dirfd = open("/path/to/dir", O_DIRECTORY); int fd = openat(dirfd, "file", O_PATH | O_NOFOLLOW); char *context; fgetfilecon(fd, &context); This change was motivated by a comment in https://android-review.googlesource.com/#/c/152680/1/toys/posix/ls.c Change-Id: Ic0cdf9f9dd0e35a63b44a4c4a08400020041eddf
2015-05-31 22:43:13 +02:00
END(___fsetxattr)
.hidden ___fsetxattr
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