diff options
Diffstat (limited to 'man2/ioctl_fat.2')
| -rw-r--r-- | man2/ioctl_fat.2 | 46 |
1 files changed, 23 insertions, 23 deletions
diff --git a/man2/ioctl_fat.2 b/man2/ioctl_fat.2 index 67b5a2c..a690cf1 100644 --- a/man2/ioctl_fat.2 +++ b/man2/ioctl_fat.2 @@ -1,7 +1,7 @@ .\" Copyright (C) 2014, Heinrich Schuchardt <xypron.glpk@gmx.de> .\" .\" SPDX-License-Identifier: Linux-man-pages-copyleft -.TH ioctl_fat 2 2023-05-03 "Linux man-pages 6.05.01" +.TH ioctl_fat 2 2023-10-31 "Linux man-pages 6.7" .SH NAME ioctl_fat \- manipulating the FAT filesystem .SH LIBRARY @@ -12,7 +12,7 @@ Standard C library .BR "#include <linux/msdos_fs.h>" " /* Definition of [" V ] FAT_* " and" .BR " ATTR_* " constants */" .B #include <sys/ioctl.h> -.PP +.P .BI "int ioctl(int " fd ", FAT_IOCTL_GET_ATTRIBUTES, uint32_t *" attr ); .BI "int ioctl(int " fd ", FAT_IOCTL_SET_ATTRIBUTES, uint32_t *" attr ); .BI "int ioctl(int " fd ", FAT_IOCTL_GET_VOLUME_ID, uint32_t *" id ); @@ -32,7 +32,7 @@ can be read with .B FAT_IOCTL_GET_ATTRIBUTES and written with .BR FAT_IOCTL_SET_ATTRIBUTES . -.PP +.P The .I fd argument contains a file descriptor for a file or directory. @@ -41,7 +41,7 @@ It is sufficient to create the file descriptor by calling with the .B O_RDONLY flag. -.PP +.P The .I attr argument contains a pointer to a bit mask. @@ -68,7 +68,7 @@ This attribute is read-only. This bit indicates that this file or directory should be archived. It is set when a file is created or modified. It is reset by an archiving system. -.PP +.P The zero value .B ATTR_NONE can be used to indicate that no attribute bit is set. @@ -76,7 +76,7 @@ can be used to indicate that no attribute bit is set. FAT filesystems are identified by a volume ID. The volume ID can be read with .BR FAT_IOCTL_GET_VOLUME_ID . -.PP +.P The .I fd argument can be a file descriptor for any file or directory of the @@ -86,13 +86,13 @@ It is sufficient to create the file descriptor by calling with the .B O_RDONLY flag. -.PP +.P The .I id argument is a pointer to the field that will be filled with the volume ID. Typically the volume ID is displayed to the user as a group of two 16-bit fields: -.PP +.P .in +4n .EX printf("Volume ID %04x\-%04x\en", id >> 16, id & 0xFFFF); @@ -104,12 +104,12 @@ consisting of up to 8 capital letters, optionally followed by a period and up to 3 capital letters for the file extension. If the actual filename does not fit into this scheme, it is stored as a long filename of up to 255 UTF-16 characters. -.PP +.P The short filenames in a directory can be read with .BR VFAT_IOCTL_READDIR_SHORT . .B VFAT_IOCTL_READDIR_BOTH reads both the short and the long filenames. -.PP +.P The .I fd argument must be a file descriptor for a directory. @@ -122,11 +122,11 @@ The file descriptor can be used only once to iterate over the directory entries by calling .BR ioctl (2) repeatedly. -.PP +.P The .I entry argument is a two-element array of the following structures: -.PP +.P .in +4n .EX struct __fat_dirent { @@ -137,10 +137,10 @@ struct __fat_dirent { }; .EE .in -.PP +.P The first entry in the array is for the short filename. The second entry is for the long filename. -.PP +.P The .I d_ino and @@ -154,7 +154,7 @@ The field holds the offset of the file entry in the directory. As these values are not available for short filenames, the user code should simply ignore them. -.PP +.P The field .I d_reclen contains the length of the filename in the field @@ -174,7 +174,7 @@ is a character string of length 0 for the long filename. On error, \-1 is returned, and .I errno is set to indicate the error. -.PP +.P For .B VFAT_IOCTL_READDIR_BOTH and @@ -205,7 +205,7 @@ does not refer to a directory. The file descriptor .I fd does not refer to an object in a FAT filesystem. -.PP +.P For further error values, see .BR ioctl (2). .SH STANDARDS @@ -234,10 +234,10 @@ to manipulate file attributes. The program reads and displays the archive attribute of a file. After inverting the value of the attribute, the program reads and displays the attribute again. -.PP +.P The following was recorded when applying the program for the file .IR /mnt/user/foo : -.PP +.P .in +4n .EX # ./toggle_fat_archive_flag /mnt/user/foo @@ -335,11 +335,11 @@ main(int argc, char *argv[]) The following program demonstrates the use of .BR ioctl (2) to display the volume ID of a FAT filesystem. -.PP +.P The following output was recorded when applying the program for directory .IR /mnt/user : -.PP +.P .in +4n .EX $ ./display_fat_volume_id /mnt/user @@ -400,10 +400,10 @@ main(int argc, char *argv[]) The following program demonstrates the use of .BR ioctl (2) to list a directory. -.PP +.P The following was recorded when applying the program to the directory .IR /mnt/user : -.PP +.P .in +4n .EX $ \fB./fat_dir /mnt/user\fP |