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Diffstat (limited to 'Documentation/MANPAGE.md')
| -rw-r--r-- | Documentation/MANPAGE.md | 102 |
1 files changed, 52 insertions, 50 deletions
diff --git a/Documentation/MANPAGE.md b/Documentation/MANPAGE.md index 4fa155a..a7d3d8b 100644 --- a/Documentation/MANPAGE.md +++ b/Documentation/MANPAGE.md @@ -1,6 +1,6 @@ % GOCRYPTFS(1) % github.com/rfjakob -% May 2016 +% Oct 2016 NAME ==== @@ -32,14 +32,14 @@ Options: **-aessiv** : Use the AES-SIV encryption mode. This is slower than GCM but is -secure with deterministic nonces as used in "-reverse" mode. + secure with deterministic nonces as used in "-reverse" mode. **-allow_other** : By default, the Linux kernel prevents any other user (even root) to -access a mounted FUSE filesystem. Settings this option allows access for -other users, subject to file permission checking. Only works if -user_allow_other is set in /etc/fuse.conf. This option is equivalent to -"allow_other" plus "default_permissions" described in fuse(8). + access a mounted FUSE filesystem. Settings this option allows access for + other users, subject to file permission checking. Only works if + user_allow_other is set in /etc/fuse.conf. This option is equivalent to + "allow_other" plus "default_permissions" described in fuse(8). **-config string** : Use specified config file instead of CIPHERDIR/gocryptfs.conf @@ -52,9 +52,9 @@ user_allow_other is set in /etc/fuse.conf. This option is equivalent to **-extpass string** : Use an external program (like ssh-askpass) for the password prompt. -The program should return the password on stdout, a trailing newline is -stripped by gocryptfs. Using something like "cat /mypassword.txt" allows -to mount the gocryptfs filesytem without user interaction. + The program should return the password on stdout, a trailing newline is + stripped by gocryptfs. Using something like "cat /mypassword.txt" allows + to mount the gocryptfs filesytem without user interaction. **-f** : Stay in the foreground instead of forking away. Implies "-nosyslog". @@ -66,67 +66,68 @@ to mount the gocryptfs filesytem without user interaction. : Initialize encrypted directory **-ko** -: Pass additonal mount options to the kernel (comma-separated list). -FUSE filesystems are mounted with "nodev,nosuid" by default. If gocryptfs -runs as root, you can enable device files by passing the opposite mount option, -"dev", and if you want to enable suid-binaries, pass "suid". -"ro" (equivalent to passing the "-ro" option) and "noexec" may also be -interesting. For a complete list see the section -`FILESYSTEM-INDEPENDENT MOUNT OPTIONS` in mount(8). +: Pass additonal mount options to the kernel (comma-separated list). + FUSE filesystems are mounted with "nodev,nosuid" by default. If gocryptfs + runs as root, you can enable device files by passing the opposite mount option, + "dev", and if you want to enable suid-binaries, pass "suid". + "ro" (equivalent to passing the "-ro" option) and "noexec" may also be + interesting. For a complete list see the section + `FILESYSTEM-INDEPENDENT MOUNT OPTIONS` in mount(8). **-longnames** : Store names longer than 176 bytes in extra files (default true) -This flag is useful when recovering old gocryptfs filesystems using -"-masterkey". It is ignored (stays at the default) otherwise. + This flag is useful when recovering old gocryptfs filesystems using + "-masterkey". It is ignored (stays at the default) otherwise. **-masterkey string** : Use a explicit master key specified on the command line. This -option can be used to mount a gocryptfs filesystem without a config file. -Note that the command line, and with it the master key, is visible to -anybody on the machine who can execute "ps -auxwww". -This is meant as a recovery option for emergencies, such as if you have -forgotten your password. + option can be used to mount a gocryptfs filesystem without a config file. + Note that the command line, and with it the master key, is visible to + anybody on the machine who can execute "ps -auxwww". + This is meant as a recovery option for emergencies, such as if you have + forgotten your password. - Example master key: 6f717d8b-6b5f8e8a-fd0aa206-778ec093-62c5669b-abd229cd-241e00cd-b4d6713d + Example master key: + 6f717d8b-6b5f8e8a-fd0aa206-778ec093-62c5669b-abd229cd-241e00cd-b4d6713d **-memprofile string** -: Write memory profile to specified file. This is useful when debugging -memory usage of gocryptfs. +: Write memory profile to the specified file. This is useful when debugging + memory usage of gocryptfs. **-nonempty** : Allow mounting over non-empty directories. FUSE by default disallows -this to prevent accidential shadowing of files. + this to prevent accidential shadowing of files. **-nosyslog** : Diagnostic messages are normally redirected to syslog once gocryptfs -daemonizes. This option disables the redirection and messages will -continue be printed to stdout and stderr. + daemonizes. This option disables the redirection and messages will + continue be printed to stdout and stderr. **-notifypid int** : Send USR1 to the specified process after successful mount. This is -used internally for daemonization. + used internally for daemonization. **-openssl bool/"auto"** : Use OpenSSL instead of built-in Go crypto (default "auto"). Using -built-in crypto is 4x slower unless your CPU has AES instructions and -you are using Go 1.6+. In mode "auto", gocrypts chooses the faster -option. + built-in crypto is 4x slower unless your CPU has AES instructions and + you are using Go 1.6+. In mode "auto", gocrypts chooses the faster + option. **-passfile string** : Read password from the specified file. This is a shortcut for -specifying "-extpass /bin/cat FILE". + specifying "-extpass /bin/cat FILE". **-passwd** : Change the password. Will ask for the old password, check if it is -correct, and ask for a new one. + correct, and ask for a new one. This can be used together with `-masterkey` if -you forgot the password but know the master key. Note that without the -old password, gocryptfs cannot tell if the master key is correct and will -overwrite the old one without mercy. It will, however, create a backup copy -of the old config file as `gocryptfs.conf.bak`. Delete it after -you have verified that you can access your files with the -new password. + you forgot the password but know the master key. Note that without the + old password, gocryptfs cannot tell if the master key is correct and will + overwrite the old one without mercy. It will, however, create a backup copy + of the old config file as `gocryptfs.conf.bak`. Delete it after + you have verified that you can access your files with the + new password. **-plaintextnames** : Do not encrypt file names and symlink targets @@ -136,33 +137,34 @@ new password. **-reverse** : Reverse mode shows a read-only encrypted view of a plaintext -directory. Implies "-aessiv". + directory. Implies "-aessiv". **-ro** : Mount the filesystem read-only **-scryptn int** : scrypt cost parameter logN. Setting this to a lower value speeds up -mounting but makes the password susceptible to brute-force attacks (default 16) + mounting but makes the password susceptible to brute-force attacks + (default 16) **-version** -: Print version and exit. The output contains three fields seperated by -";". Example: "gocryptfs v0.12-2; go-fuse a4c968c; go1.6.2". -Field 1 is the gocryptfs version, field 2 is the version of the go-fuse -library, field 3 is the Go version that was used to compile the binary. +: Print version and exit. The output contains three fields seperated by ";". + Example: "gocryptfs v0.12-2; go-fuse a4c968c; go1.6.2". + Field 1 is the gocryptfs version, field 2 is the version of the go-fuse + library, field 3 is the Go version that was used to compile the binary. **-wpanic** : When encountering a warning, panic and exit immediately. This is -useful in regression testing. + useful in regression testing. **-zerokey** : Use all-zero dummy master key. This options is only intended for -automated testing as it does not provide any security. + automated testing as it does not provide any security. Comma-Separated-Options: -For compatability with mount(1), options are also accepted as +For compatibility with mount(1), options are also accepted as "-o COMMA-SEPARATED-OPTIONS" at the end of the command line. For example, "-o q,zerokey" is equivalent to "-q -zerokey". |