diff options
Diffstat (limited to 'man7/inode.7')
| -rw-r--r-- | man7/inode.7 | 43 |
1 files changed, 21 insertions, 22 deletions
diff --git a/man7/inode.7 b/man7/inode.7 index 3cbdeee..7054fe8 100644 --- a/man7/inode.7 +++ b/man7/inode.7 @@ -3,7 +3,7 @@ .\" .\" SPDX-License-Identifier: Linux-man-pages-copyleft .\" -.TH inode 7 2023-07-30 "Linux man-pages 6.05.01" +.TH inode 7 2023-10-31 "Linux man-pages 6.7" .SH NAME inode \- file inode information .SH DESCRIPTION @@ -17,7 +17,7 @@ structure, or which returns a .I statx structure. -.PP +.P The following is a list of the information typically found in, or associated with, the file inode, with the names of the corresponding structure fields returned by @@ -56,7 +56,6 @@ Additional links to an existing file are created using .BR link (2). .TP User ID -.I st_uid \fIstat.st_uid\fP; \fIstatx.stx_uid\fP .IP This field records the user ID of the owner of the file. @@ -99,7 +98,7 @@ This field gives the "preferred" blocksize for efficient filesystem I/O. an inefficient read-modify-rewrite.) .TP Number of blocks allocated to the file -\fIstat.st_blocks\fP; \fIstatx.stx_size\fP +\fIstat.st_blocks\fP; \fIstatx.stx_blocks\fP .IP This field indicates the number of blocks allocated to the file, 512-byte units, @@ -185,12 +184,12 @@ Last status change timestamp (ctime) This is the file's last status change timestamp. It is changed by writing or by setting inode information (i.e., owner, group, link count, mode, etc.). -.PP +.P The timestamp fields report time measured with a zero point at the .IR Epoch , 1970-01-01 00:00:00 +0000, UTC (see .BR time (7)). -.PP +.P Nanosecond timestamps are supported on XFS, JFS, Btrfs, and ext4 (since Linux 2.6.23). .\" commit ef7f38359ea8b3e9c7f2cae9a4d4935f55ca9e80 @@ -221,7 +220,7 @@ field (for the .I statx.stx_mode field) contains the file type and mode. -.PP +.P POSIX refers to the .I stat.st_mode bits corresponding to the mask @@ -232,7 +231,7 @@ the 12 bits corresponding to the mask 07777 as the .I file mode bits and the least significant 9 bits (0777) as the .IR "file permission bits" . -.PP +.P The following mask values are defined for the file type: .in +4n .TS @@ -248,9 +247,9 @@ S_IFCHR 0020000 character device S_IFIFO 0010000 FIFO .TE .in -.PP +.P Thus, to test for a regular file (for example), one could write: -.PP +.P .in +4n .EX stat(pathname, &sb); @@ -259,7 +258,7 @@ if ((sb.st_mode & S_IFMT) == S_IFREG) { } .EE .in -.PP +.P Because tests of the above form are common, additional macros are defined by POSIX to allow the test of the file type in .I st_mode @@ -287,9 +286,9 @@ symbolic link? (Not in POSIX.1-1996.) .BR S_ISSOCK (m) socket? (Not in POSIX.1-1996.) .RE -.PP +.P The preceding code snippet could thus be rewritten as: -.PP +.P .in +4n .EX stat(pathname, &sb); @@ -298,7 +297,7 @@ if (S_ISREG(sb.st_mode)) { } .EE .in -.PP +.P The definitions of most of the above file type test macros are provided if any of the following feature test macros is defined: .B _BSD_SOURCE @@ -315,7 +314,7 @@ and are provided if .B _XOPEN_SOURCE is defined. -.PP +.P The definition of .B S_IFSOCK can also be exposed either by defining @@ -324,7 +323,7 @@ with a value of 500 or greater or (since glibc 2.24) by defining both .B _XOPEN_SOURCE and .BR _XOPEN_SOURCE_EXTENDED . -.PP +.P The definition of .BR S_ISSOCK () is exposed if any of the following feature test macros is defined: @@ -339,7 +338,7 @@ with a value of 200112L or greater, or (since glibc 2.24) by defining both .B _XOPEN_SOURCE and .BR _XOPEN_SOURCE_EXTENDED . -.PP +.P The following mask values are defined for the file mode component of the .I st_mode @@ -397,7 +396,7 @@ others have execute permission T} .TE .in -.PP +.P The set-group-ID bit .RB ( S_ISGID ) has several special uses. @@ -414,7 +413,7 @@ For a file that does not have the group execution bit .RB ( S_IXGRP ) set, the set-group-ID bit indicates mandatory file/record locking. -.PP +.P The sticky bit .RB ( S_ISVTX ) on a directory means that a file @@ -425,7 +424,7 @@ process. POSIX.1-2008. .SH HISTORY POSIX.1-2001. -.PP +.P POSIX.1-1990 did not describe the .BR S_IFMT , .BR S_IFSOCK , @@ -441,7 +440,7 @@ constants, but instead specified the use of the macros .BR S_ISDIR () and so on. -.PP +.P The .BR S_ISLNK () and @@ -449,7 +448,7 @@ and macros were not in POSIX.1-1996; the former is from SVID 4, the latter from SUSv2. -.PP +.P UNIX\ V7 (and later systems) had .BR S_IREAD , .BR S_IWRITE , |