Why the “ls” command is showing the permissions of files in a FAT32 partition?
I believe that the FAT32 file system does not support file permissions, however when I do ls -l on a FAT32 partition, ls -l shows that the files have permissions:
-rw-r--r-- 1 john john 11 Mar 20 15:43 file1.txt
-rw-r--r-- 1 john john 5 Mar 20 15:49 file2.txt
Why is ls -l displaying the permissions of files?
linux permissions filesystems fat fat32
edited 2 hours ago
Jeff Schaller
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asked 2 hours ago
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I believe that the FAT32 file system does not support file permissions, however when I do ls -l on a FAT32 partition, ls -l shows that the files have permissions:
-rw-r--r-- 1 john john 11 Mar 20 15:43 file1.txt
-rw-r--r-- 1 john john 5 Mar 20 15:49 file2.txt
Why is ls -l displaying the permissions of files?
linux permissions filesystems fat fat32
edited 2 hours ago
Jeff Schaller
43.7k1161141
asked 2 hours ago
user342731user342731
361
New contributor
user342731 is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
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I believe that the FAT32 file system does not support file permissions, however when I do ls -l on a FAT32 partition, ls -l shows that the files have permissions:
-rw-r--r-- 1 john john 11 Mar 20 15:43 file1.txt
-rw-r--r-- 1 john john 5 Mar 20 15:49 file2.txt
Why is ls -l displaying the permissions of files?
linux permissions filesystems fat fat32
edited 2 hours ago
Jeff Schaller
43.7k1161141
asked 2 hours ago
user342731user342731
361
New contributor
user342731 is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.
I believe that the FAT32 file system does not support file permissions, however when I do ls -l on a FAT32 partition, ls -l shows that the files have permissions:
-rw-r--r-- 1 john john 11 Mar 20 15:43 file1.txt
-rw-r--r-- 1 john john 5 Mar 20 15:49 file2.txt
Why is ls -l displaying the permissions of files?
linux permissions filesystems fat fat32
linux permissions filesystems fat fat32
edited 2 hours ago
Jeff Schaller
43.7k1161141
asked 2 hours ago
user342731user342731
361
New contributor
user342731 is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
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edited 2 hours ago
Jeff Schaller
43.7k1161141
asked 2 hours ago
user342731user342731
361
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edited 2 hours ago
Jeff Schaller
43.7k1161141
edited 2 hours ago
Jeff Schaller
43.7k1161141
edited 2 hours ago
Jeff Schaller
43.7k1161141
43.7k1161141
asked 2 hours ago
user342731user342731
361
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asked 2 hours ago
user342731user342731
361
asked 2 hours ago
user342731user342731
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361
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The filesystem as stored on disk doesn't store file permissions, but the filesystem driver has to provide them to the operating system since they are an integral part of the Unix filesystem concept(*).
So, the driver fakes some permissions, same ones for all files. The permissions along with the files' owner and group are configurable at mount time. See "Mount options for fat" in the mount(8) man page.
(* Consider what would happen if a file didn't have any permission bits at all? Would it be the same as 0777, i.e. access to all; or the same as 0000, i.e. no access to anyone? But both of those are file permissions, so why not show them? Or do something more useful and set some sensible permissions.)
answered 2 hours ago
ilkkachuilkkachu
61.9k10101178
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1 Answer
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The filesystem as stored on disk doesn't store file permissions, but the filesystem driver has to provide them to the operating system since they are an integral part of the Unix filesystem concept(*).
So, the driver fakes some permissions, same ones for all files. The permissions along with the files' owner and group are configurable at mount time. See "Mount options for fat" in the mount(8) man page.
(* Consider what would happen if a file didn't have any permission bits at all? Would it be the same as 0777, i.e. access to all; or the same as 0000, i.e. no access to anyone? But both of those are file permissions, so why not show them? Or do something more useful and set some sensible permissions.)
answered 2 hours ago
ilkkachuilkkachu
61.9k10101178
add a comment |
The filesystem as stored on disk doesn't store file permissions, but the filesystem driver has to provide them to the operating system since they are an integral part of the Unix filesystem concept(*).
So, the driver fakes some permissions, same ones for all files. The permissions along with the files' owner and group are configurable at mount time. See "Mount options for fat" in the mount(8) man page.
(* Consider what would happen if a file didn't have any permission bits at all? Would it be the same as 0777, i.e. access to all; or the same as 0000, i.e. no access to anyone? But both of those are file permissions, so why not show them? Or do something more useful and set some sensible permissions.)
answered 2 hours ago
ilkkachuilkkachu
61.9k10101178
add a comment |
The filesystem as stored on disk doesn't store file permissions, but the filesystem driver has to provide them to the operating system since they are an integral part of the Unix filesystem concept(*).
So, the driver fakes some permissions, same ones for all files. The permissions along with the files' owner and group are configurable at mount time. See "Mount options for fat" in the mount(8) man page.
(* Consider what would happen if a file didn't have any permission bits at all? Would it be the same as 0777, i.e. access to all; or the same as 0000, i.e. no access to anyone? But both of those are file permissions, so why not show them? Or do something more useful and set some sensible permissions.)
answered 2 hours ago
ilkkachuilkkachu
61.9k10101178
The filesystem as stored on disk doesn't store file permissions, but the filesystem driver has to provide them to the operating system since they are an integral part of the Unix filesystem concept(*).
So, the driver fakes some permissions, same ones for all files. The permissions along with the files' owner and group are configurable at mount time. See "Mount options for fat" in the mount(8) man page.
(* Consider what would happen if a file didn't have any permission bits at all? Would it be the same as 0777, i.e. access to all; or the same as 0000, i.e. no access to anyone? But both of those are file permissions, so why not show them? Or do something more useful and set some sensible permissions.)
answered 2 hours ago
ilkkachuilkkachu
61.9k10101178
answered 2 hours ago
ilkkachuilkkachu
61.9k10101178
answered 2 hours ago
ilkkachuilkkachu
61.9k10101178
answered 2 hours ago
ilkkachuilkkachu
61.9k10101178
61.9k10101178
add a comment |
add a comment |
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