diff options
| author | Stefan Metzmacher <metze@samba.org> | 2022-08-08 15:23:29 +0200 |
|---|---|---|
| committer | Volker Lendecke <vl@samba.org> | 2022-08-15 15:03:36 +0000 |
| commit | ce804b78164a3166a16ca3071028536761fd18d7 (patch) | |
| tree | 02ffe5ed5fcb9c23f8c61e356157bf3a4aa1cec9 /lib/replace | |
| parent | 2369d0833361faf4a125431e735fce7efb6024d6 (diff) | |
| download | samba-ce804b78164a3166a16ca3071028536761fd18d7.tar.gz | |
lib/replace: add a replacement for openat2() that returns ENOSYS
Signed-off-by: Stefan Metzmacher <metze@samba.org>
Reviewed-by: Volker Lendecke <vl@samba.org>
Diffstat (limited to 'lib/replace')
| -rw-r--r-- | lib/replace/replace.c | 9 | ||||
| -rw-r--r-- | lib/replace/system/filesys.h | 35 | ||||
| -rw-r--r-- | lib/replace/wscript | 1 |
3 files changed, 45 insertions, 0 deletions
diff --git a/lib/replace/replace.c b/lib/replace/replace.c index 0652cb4e6d6..763afec78c5 100644 --- a/lib/replace/replace.c +++ b/lib/replace/replace.c @@ -1081,3 +1081,12 @@ ssize_t rep_copy_file_range(int fd_in, return -1; } #endif /* HAVE_COPY_FILE_RANGE */ + +#ifndef HAVE_OPENAT2 +long rep_openat2(int dirfd, const char *pathname, + struct open_how *how, size_t size) +{ + errno = ENOSYS; + return -1; +} +#endif /* !HAVE_OPENAT2 */ diff --git a/lib/replace/system/filesys.h b/lib/replace/system/filesys.h index bb9482c69af..8005b18780f 100644 --- a/lib/replace/system/filesys.h +++ b/lib/replace/system/filesys.h @@ -243,4 +243,39 @@ int rep_fsetxattr (int filedes, const char *name, const void *value, size_t size #endif /* !defined(HAVE_XATTR_XATTR) || defined(XATTR_ADDITIONAL_OPTIONS) */ +#ifdef HAVE_LINUX_OPENAT2_H +#include <linux/openat2.h> +#else /* ! HAVE_LINUX_OPENAT2_H */ +/* how->resolve flags for openat2(2). */ +#define RESOLVE_NO_XDEV 0x01 /* Block mount-point crossings + (includes bind-mounts). */ +#define RESOLVE_NO_MAGICLINKS 0x02 /* Block traversal through procfs-style + "magic-links". */ +#define RESOLVE_NO_SYMLINKS 0x04 /* Block traversal through all symlinks + (implies OEXT_NO_MAGICLINKS) */ +#define RESOLVE_BENEATH 0x08 /* Block "lexical" trickery like + "..", symlinks, and absolute + paths which escape the dirfd. */ +#define RESOLVE_IN_ROOT 0x10 /* Make all jumps to "/" and ".." + be scoped inside the dirfd + (similar to chroot(2)). */ +#define RESOLVE_CACHED 0x20 /* Only complete if resolution can be + completed through cached lookup. May + return -EAGAIN if that's not + possible. */ +struct __rep_open_how { + uint64_t flags; + uint64_t mode; + uint64_t resolve; +}; +#define open_how __rep_open_how +#endif /* ! HAVE_LINUX_OPENAT2_H */ + +#ifndef HAVE_OPENAT2 +long rep_openat2(int dirfd, const char *pathname, + struct open_how *how, size_t size); +#define openat2(dirfd, pathname, how, size) \ + rep_openat2(dirfd, pathname, how, size) +#endif /* !HAVE_OPENAT2 */ + #endif diff --git a/lib/replace/wscript b/lib/replace/wscript index dd9b19219a1..2f179992c82 100644 --- a/lib/replace/wscript +++ b/lib/replace/wscript @@ -66,6 +66,7 @@ def configure(conf): conf.CHECK_HEADERS('errno.h') conf.CHECK_HEADERS('getopt.h iconv.h') conf.CHECK_HEADERS('memory.h nss.h sasl/sasl.h') + conf.CHECK_HEADERS('linux/openat2.h') conf.CHECK_FUNCS_IN('inotify_init', 'inotify', checklibc=True, headers='sys/inotify.h') |