diff options
Diffstat (limited to 'bin/gensquashfs')
| -rw-r--r-- | bin/gensquashfs/gensquashfs.1 | 84 | ||||
| -rw-r--r-- | bin/gensquashfs/options.c | 6 |
2 files changed, 86 insertions, 4 deletions
diff --git a/bin/gensquashfs/gensquashfs.1 b/bin/gensquashfs/gensquashfs.1 index 9ef4ee8..a2dce9e 100644 --- a/bin/gensquashfs/gensquashfs.1 +++ b/bin/gensquashfs/gensquashfs.1 @@ -1,4 +1,4 @@ -.TH GENSQUASHFS "1" "June 2019" "generate squashfs images" "User Commands" +.TH GENSQUASHFS "1" "March 2021" "generate squashfs images" "User Commands" .SH NAME gensquashfs \- generate squashfs images .SH SYNOPSIS @@ -123,6 +123,7 @@ slink <path> <mode> <uid> <gid> <target> link <path> <dummy> <dummy> <dummy> <target> pipe <path> <mode> <uid> <gid> sock <path> <mode> <uid> <gid> +glob <path> <mode|*> <uid|*> <gid|*> [OPTIONS...] <location> .fi .in @@ -156,10 +157,79 @@ T} <min>;Minor number of a device special file. .TE +.SS File Globbing +The \fBglob\fR command requires an \fIinput location\fR which is interpreted +relative to the pack directory (or the input file if no directory was +specified). This location is scanned recursively and the contents are added +to the specified virtual path. + +The specified \fImode\fR, \fIuid\fR and \fIgid\fR are applied to all new +entries added by the glob. They can alternatively be set to the special +value \fB*\fR to use the value from the input directory. + +In front of the source location, several additional options can be specified to +control the behavior of the glob command: + +.TS +tab(;) allbox; +l l +l l +l l +l l +l l +l l +l l +l l +rd. +\fBOption\fR;\fBDescription\fR +\-type;T{ +Followed by a single space and a single, lowercase character describing +the inode type to accept. Works similar to the \fB\-type\fR option of the +\fBfind\fR command. + +Possible values are \fBb\fR (block devices), \fBc\fR (character devices), +\fBd\fR (directories), \fBp\fR (named pipes), \fBf\fR (regular files), +\fBl\fR (symlinks) and \fBs\fR (sockets). + +If \fB\-type\fR is not used, all are accepted. The first use clamps the +selection down to a single type and subsequent uses allow additional +types. +T} +\-xdev;Do not cross mount points during a recursive glob. +\-mount;An alias for \fB\-xdev\fR +\-keeptime;Use the time stamps from the scanned files. +\-nonrecursive;T{ +Do not descend into directories. + +Even if the type argument does not include directories, it is still possible to +recursively scan a hierarchy. In that case, the scanning will not add \fInew\fR +directory nodes, but still recurse into a directory if a coresponding node +already exist in the virtual filesystem tree. + +So a typicall use case might be to first scan only the +directories, and then do several narrower globs to fill them. +T} +\-name <pattern>;T{ +Only add entries if their name matches a shell glob pattern. + +If the pattern is supposed to contain spaces, it can be wrapped in +quotation marks ("..." or '...'). +T} +\-path <pattern>;T{ +Only add entries if their full resulting path in the SquashFS image +matches a shell glob pattern. Slashes in the path are only matched +against slashes in the pattern and will never match a wild card +character or a bracket expression containing a slash. + +The path is normalized, so it won't have a leading or trailing slash. +T} +.TE .PP -Example: +Any other, unknown string starting with \- will be rejected as unknown option. +If the input path starts with \-, the sequence \-\- can be used to stop +argument parsing, similar to many command line tools. +.SS Example .PP -.in +4n .nf # A simple squashfs image dir /dev 0755 0 0 @@ -176,8 +246,14 @@ file /bin/bash 0755 0 0 # file name with a space in it and a "special" name file "/opt/my app/\\"special\\"/data" 0600 0 0 + +# collect the contents of ./lib and put it under /usr/lib +# mode and uid/gid are explictly set. First we collect the directory tree, +# then all so files, then all symlinks that don't end in ".so" +glob /usr/lib 0755 0 0 -type d ./lib +glob /usr/lib 0755 0 0 -type f -name "*.so.*" ./lib +glob /usr/lib 0777 0 0 -type l -name "*.so.*" ./lib .fi -.in .SH ENVIRONMENT If the command line switch \fB\-\-defaults\fR is not used or no default mtime is specified, the value of the environment variable \fBSOURCE\_DATE\_EPOCH\fR diff --git a/bin/gensquashfs/options.c b/bin/gensquashfs/options.c index ec2263c..14c37ab 100644 --- a/bin/gensquashfs/options.c +++ b/bin/gensquashfs/options.c @@ -131,6 +131,7 @@ const char *help_details = "link <path> <dummy> <dummy> <dummy> <target>\n" "pipe <path> <mode> <uid> <gid>\n" "sock <path> <mode> <uid> <gid>\n" +"glob <path> <mode|*> <uid|*> <gid|*> [OPTIONS...] <location>\n" "\n" "<path> Absolute path of the entry in the image. Can be put in quotes\n" " if some components contain spaces.\n" @@ -161,6 +162,11 @@ const char *help_details = " \n" " # file name with a space in it.\n" " file \"/opt/my app/\\\"special\\\"/data\" 0600 0 0\n" +" \n" +" # collect the contents of ./lib and put it under /usr/lib\n" +" glob /usr/lib 0755 0 0 -type d ./lib\n" +" glob /usr/lib 0755 0 0 -type f -name \"*.so.*\" ./lib\n" +" glob /usr/lib 0777 0 0 -type l -name \"*.so.*\" ./lib\n" "\n\n"; void process_command_line(options_t *opt, int argc, char **argv) |