https://github.com/checkpoint-restore/criu/commit/517c0947050e63aac72f63a3bf373d76264723b9 https://bugs.gentoo.org/868099 From: Radostin Stoyanov Date: Wed, 24 Aug 2022 21:20:30 +0200 Subject: [PATCH] mount: add definition for FSOPEN_CLOEXEC A recent change in glibc introduced `enum fsconfig_command` [1] and as a result the compilation of criu fails with the following errors In file included from criu/pie/util.c:3: /usr/include/sys/mount.h:240:6: error: redeclaration of 'enum fsconfig_command' 240 | enum fsconfig_command | ^~~~~~~~~~~~~~~~ In file included from /usr/include/sys/mount.h:32: criu/include/linux/mount.h:11:6: note: originally defined here 11 | enum fsconfig_command { | ^~~~~~~~~~~~~~~~ /usr/include/sys/mount.h:242:3: error: redeclaration of enumerator 'FSCONFIG_SET_FLAG' 242 | FSCONFIG_SET_FLAG = 0, /* Set parameter, supplying no value */ | ^~~~~~~~~~~~~~~~~ criu/include/linux/mount.h:12:9: note: previous definition of 'FSCONFIG_SET_FLAG' with type 'enum fsconfig_command' 12 | FSCONFIG_SET_FLAG = 0, /* Set parameter, supplying no value */ | ^~~~~~~~~~~~~~~~~ /usr/include/sys/mount.h:244:3: error: redeclaration of enumerator 'FSCONFIG_SET_STRING' 244 | FSCONFIG_SET_STRING = 1, /* Set parameter, supplying a string value */ | ^~~~~~~~~~~~~~~~~~~ criu/include/linux/mount.h:14:9: note: previous definition of 'FSCONFIG_SET_STRING' with type 'enum fsconfig_command' 14 | FSCONFIG_SET_STRING = 1, /* Set parameter, supplying a string value */ | ^~~~~~~~~~~~~~~~~~~ /usr/include/sys/mount.h:246:3: error: redeclaration of enumerator 'FSCONFIG_SET_BINARY' 246 | FSCONFIG_SET_BINARY = 2, /* Set parameter, supplying a binary blob value */ | ^~~~~~~~~~~~~~~~~~~ criu/include/linux/mount.h:16:9: note: previous definition of 'FSCONFIG_SET_BINARY' with type 'enum fsconfig_command' 16 | FSCONFIG_SET_BINARY = 2, /* Set parameter, supplying a binary blob value */ | ^~~~~~~~~~~~~~~~~~~ /usr/include/sys/mount.h:248:3: error: redeclaration of enumerator 'FSCONFIG_SET_PATH' 248 | FSCONFIG_SET_PATH = 3, /* Set parameter, supplying an object by path */ | ^~~~~~~~~~~~~~~~~ criu/include/linux/mount.h:18:9: note: previous definition of 'FSCONFIG_SET_PATH' with type 'enum fsconfig_command' 18 | FSCONFIG_SET_PATH = 3, /* Set parameter, supplying an object by path */ | ^~~~~~~~~~~~~~~~~ /usr/include/sys/mount.h:250:3: error: redeclaration of enumerator 'FSCONFIG_SET_PATH_EMPTY' 250 | FSCONFIG_SET_PATH_EMPTY = 4, /* Set parameter, supplying an object by (empty) path */ | ^~~~~~~~~~~~~~~~~~~~~~~ criu/include/linux/mount.h:20:9: note: previous definition of 'FSCONFIG_SET_PATH_EMPTY' with type 'enum fsconfig_command' 20 | FSCONFIG_SET_PATH_EMPTY = 4, /* Set parameter, supplying an object by (empty) path */ | ^~~~~~~~~~~~~~~~~~~~~~~ /usr/include/sys/mount.h:252:3: error: redeclaration of enumerator 'FSCONFIG_SET_FD' 252 | FSCONFIG_SET_FD = 5, /* Set parameter, supplying an object by fd */ | ^~~~~~~~~~~~~~~ criu/include/linux/mount.h:22:9: note: previous definition of 'FSCONFIG_SET_FD' with type 'enum fsconfig_command' 22 | FSCONFIG_SET_FD = 5, /* Set parameter, supplying an object by fd */ | ^~~~~~~~~~~~~~~ /usr/include/sys/mount.h:254:3: error: redeclaration of enumerator 'FSCONFIG_CMD_CREATE' 254 | FSCONFIG_CMD_CREATE = 6, /* Invoke superblock creation */ | ^~~~~~~~~~~~~~~~~~~ criu/include/linux/mount.h:24:9: note: previous definition of 'FSCONFIG_CMD_CREATE' with type 'enum fsconfig_command' 24 | FSCONFIG_CMD_CREATE = 6, /* Invoke superblock creation */ | ^~~~~~~~~~~~~~~~~~~ /usr/include/sys/mount.h:256:3: error: redeclaration of enumerator 'FSCONFIG_CMD_RECONFIGURE' 256 | FSCONFIG_CMD_RECONFIGURE = 7, /* Invoke superblock reconfiguration */ | ^~~~~~~~~~~~~~~~~~~~~~~~ criu/include/linux/mount.h:26:9: note: previous definition of 'FSCONFIG_CMD_RECONFIGURE' with type 'enum fsconfig_command' 26 | FSCONFIG_CMD_RECONFIGURE = 7, /* Invoke superblock reconfiguration */ This patch adds definition for FSOPEN_CLOEXEC to solve this problem. In particular, sys/mount.h includes ifndef check for FSOPEN_CLOEXEC surrounding `enum fsconfig_command`. [1] https://sourceware.org/git/?p=glibc.git;a=commitdiff;h=7eae6a91e9b1670330c9f15730082c91c0b1d570 Reported-by: Younes Manton (@ymanton) Signed-off-by: Radostin Stoyanov --- a/criu/include/linux/mount.h +++ b/criu/include/linux/mount.h @@ -6,7 +6,7 @@ /* Copied from /usr/include/sys/mount.h */ -#ifndef FSCONFIG_CMD_CREATE +#ifndef FSOPEN_CLOEXEC /* The type of fsconfig call made. */ enum fsconfig_command { FSCONFIG_SET_FLAG = 0, /* Set parameter, supplying no value */ @@ -26,7 +26,13 @@ enum fsconfig_command { FSCONFIG_CMD_RECONFIGURE = 7, /* Invoke superblock reconfiguration */ #define FSCONFIG_CMD_RECONFIGURE FSCONFIG_CMD_RECONFIGURE }; -#endif // FSCONFIG_CMD_CREATE + +#endif // FSOPEN_CLOEXEC + +/* fsopen flags. With the redundant definition, we check if the kernel, + * glibc value and our value still match. + */ +#define FSOPEN_CLOEXEC 0x00000001 #ifndef MS_MGC_VAL /* Magic mount flag number. Has to be or-ed to the flag values. */