* Re: [PATCH] classes/sstate: Update output hash
2019-01-15 19:39 [PATCH] classes/sstate: Update output hash Joshua Watt
@ 2019-01-15 20:16 ` Jacob Kroon
2019-01-15 20:49 ` Jacob Kroon
` (2 subsequent siblings)
3 siblings, 0 replies; 5+ messages in thread
From: Jacob Kroon @ 2019-01-15 20:16 UTC (permalink / raw)
To: Joshua Watt, openembedded-core; +Cc: Peter Kjellerstedt
On 1/15/19 8:39 PM, Joshua Watt wrote:
> Updates the output hash calculation for determining if tasks are
> equivalent. The new algorithm does the following based on feedback:
> 1) All files are printed in a single line tabular format
> 2) Prints the file type and mode in a user-friendly ls-like format
> 3) Includes the file owner and group (by name, not ID). These are only
> included if the task is run under pseudo, since that is the only
> time they can be consistently determined.
> 4) File size is included for regular files
>
> Signed-off-by: Joshua Watt <JPEWhacker@gmail.com>
> ---
> meta/classes/sstate.bbclass | 91 +++++++++++++++++++++++++++++++------
> 1 file changed, 76 insertions(+), 15 deletions(-)
>
> diff --git a/meta/classes/sstate.bbclass b/meta/classes/sstate.bbclass
> index 482ffa83f98..a103a759825 100644
> --- a/meta/classes/sstate.bbclass
> +++ b/meta/classes/sstate.bbclass
> @@ -784,6 +784,8 @@ python sstate_sign_package () {
> def OEOuthashBasic(path, sigfile, task, d):
> import hashlib
> import stat
> + import pwd
> + import grp
>
> def update_hash(s):
> s = s.encode('utf-8')
> @@ -793,6 +795,7 @@ def OEOuthashBasic(path, sigfile, task, d):
>
> h = hashlib.sha256()
> prev_dir = os.getcwd()
> + include_owners = os.environ.get('PSEUDO_DISABLED') == '0'
>
> try:
> os.chdir(path)
> @@ -807,34 +810,92 @@ def OEOuthashBasic(path, sigfile, task, d):
> update_hash("task=%s\n" % task)
>
> for root, dirs, files in os.walk('.', topdown=True):
> - # Sort directories and files to ensure consistent ordering
> + # Sort directories to ensure consistent ordering when recursing
> dirs.sort()
> files.sort()
>
> - for f in files:
> - path = os.path.join(root, f)
> + def process(path):
> s = os.lstat(path)
>
> - # Hash file path
> - update_hash(path + '\n')
> + if stat.S_ISDIR(s.st_mode):
> + update_hash('d')
> + elif stat.S_ISCHR(s.st_mode):
> + update_hash('c')
> + elif stat.S_ISBLK(s.st_mode):
> + update_hash('b')
> + elif stat.S_ISSOCK(s.st_mode):
> + update_hash('s')
> + elif stat.S_ISLNK(s.st_mode):
> + update_hash('l')
> + elif stat.S_ISFIFO(s.st_mode):
> + update_hash('p')
> + else:
> + update_hash('-')
> +
> + def add_perm(mask, on, off='-'):
> + if mask & s.st_mode:
> + update_hash(on)
> + else:
> + update_hash(off)
> +
> + add_perm(stat.S_IRUSR, 'r')
> + add_perm(stat.S_IWUSR, 'w')
> + if stat.S_ISUID & s.st_mode:
> + add_perm(stat.S_IXUSR, 's', 'S')
> + else:
> + add_perm(stat.S_IXUSR, 'x')
>
> - # Hash file mode
> - update_hash("\tmode=0x%x\n" % stat.S_IMODE(s.st_mode))
> - update_hash("\ttype=0x%x\n" % stat.S_IFMT(s.st_mode))
> + add_perm(stat.S_IRGRP, 'r')
> + add_perm(stat.S_IWGRP, 'w')
> + if stat.S_ISGID & s.st_mode:
> + add_perm(stat.S_IXGRP, 's', 'S')
> + else:
> + add_perm(stat.S_IXGRP, 'x')
>
> - if stat.S_ISBLK(s.st_mode) or stat.S_ISBLK(s.st_mode):
> - # Hash device major and minor
> - update_hash("\tdev=%d,%d\n" % (os.major(s.st_rdev), os.minor(s.st_rdev)))
> - elif stat.S_ISLNK(s.st_mode):
> - # Hash symbolic link
> - update_hash("\tsymlink=%s\n" % os.readlink(path))
> + add_perm(stat.S_IROTH, 'r')
> + add_perm(stat.S_IWOTH, 'w')
> + if stat.S_ISVTX & s.st_mode:
> + update_hash('t')
> + else:
> + add_perm(stat.S_IXOTH, 'x')
> +
> + if include_owners:
> + #update_hash(" %5d" % s.st_uid)
> + #update_hash(" %5d" % s.st_gid)
> + update_hash(" %10s" % pwd.getpwuid(s.st_uid).pw_name)
> + update_hash(" %10s" % grp.getgrgid(s.st_gid).gr_name)
> +
> + if stat.S_ISBLK(s.st_mode) or stat.S_ISCHR(s.st_mode):
> + update_hash(" %9s" % ("%d.%d" % (os.major(s.st_rdev), os.minor(s.st_rdev))))
> else:
> + update_hash(" " * 10)
> +
> + if stat.S_ISREG(s.st_mode):
> + update_hash(" %10d" % s.st_size)
> + else:
> + update_hash(" " * 11)
> +
> + update_hash(" %s" % path)
> +
> + if stat.S_ISLNK(s.st_mode):
> + update_hash(" -> %s" % os.readlink(path))
> +
> + if stat.S_ISREG(s.st_mode):
> fh = hashlib.sha256()
> # Hash file contents
> with open(path, 'rb') as d:
> for chunk in iter(lambda: d.read(4096), b""):
> fh.update(chunk)
> - update_hash("\tdigest=%s\n" % fh.hexdigest())
> + update_hash(" %s" % fh.hexdigest())
> +
> + update_hash("\n")
> +
> + # Process this directory and all its child files
> + process(root)
> + for f in files:
> + if f == 'fixmepath':
> + continue
> + process(os.path.join(root, f))
> finally:
> os.chdir(prev_dir)
>
>
Thanks for working on this Joshua.
It looks really nice, this is an example of the busybox depsig.do_package I get with this patch applied:
drwxrwxr-x root root .
drwxr-xr-x root root ./package
drwxr-xr-x root root ./package/bin
lrwxrwxrwx root root ./package/bin/busybox -> busybox.nosuid
-rwxr-xr-x root root 551388 ./package/bin/busybox.nosuid b50144c6a810bf92cbd442fd6f55794b6cdc8625a46f55c2e9d86ad22d75134a
-rwsr-xr-x root root 50860 ./package/bin/busybox.suid eb7af7e8f9e4a5bf6be7fb5ac16064ccd8f35e9890661134c5d73efbeb6e1d44
lrwxrwxrwx root root ./package/bin/sh -> busybox.nosuid
How about prepending the hashes first, printing just spaces or maybe doing '000...' for symlinks and directories ?
My 2 cents..
/Jacob
^ permalink raw reply [flat|nested] 5+ messages in thread* Re: [PATCH] classes/sstate: Update output hash
2019-01-15 19:39 [PATCH] classes/sstate: Update output hash Joshua Watt
2019-01-15 20:16 ` Jacob Kroon
@ 2019-01-15 20:49 ` Jacob Kroon
2019-01-15 22:00 ` Richard Purdie
2019-01-21 22:39 ` [PATCH v2] " Joshua Watt
3 siblings, 0 replies; 5+ messages in thread
From: Jacob Kroon @ 2019-01-15 20:49 UTC (permalink / raw)
To: Joshua Watt, openembedded-core; +Cc: Peter Kjellerstedt
On 1/15/19 8:39 PM, Joshua Watt wrote:
> Updates the output hash calculation for determining if tasks are
> equivalent. The new algorithm does the following based on feedback:
> 1) All files are printed in a single line tabular format
> 2) Prints the file type and mode in a user-friendly ls-like format
> 3) Includes the file owner and group (by name, not ID). These are only
> included if the task is run under pseudo, since that is the only
> time they can be consistently determined.
> 4) File size is included for regular files
>
> Signed-off-by: Joshua Watt <JPEWhacker@gmail.com>
> ---
> meta/classes/sstate.bbclass | 91 +++++++++++++++++++++++++++++++------
> 1 file changed, 76 insertions(+), 15 deletions(-)
>
> diff --git a/meta/classes/sstate.bbclass b/meta/classes/sstate.bbclass
> index 482ffa83f98..a103a759825 100644
> --- a/meta/classes/sstate.bbclass
> +++ b/meta/classes/sstate.bbclass
> @@ -784,6 +784,8 @@ python sstate_sign_package () {
> def OEOuthashBasic(path, sigfile, task, d):
> import hashlib
> import stat
> + import pwd
> + import grp
>
> def update_hash(s):
> s = s.encode('utf-8')
> @@ -793,6 +795,7 @@ def OEOuthashBasic(path, sigfile, task, d):
>
> h = hashlib.sha256()
> prev_dir = os.getcwd()
> + include_owners = os.environ.get('PSEUDO_DISABLED') == '0'
>
> try:
> os.chdir(path)
> @@ -807,34 +810,92 @@ def OEOuthashBasic(path, sigfile, task, d):
> update_hash("task=%s\n" % task)
>
> for root, dirs, files in os.walk('.', topdown=True):
> - # Sort directories and files to ensure consistent ordering
> + # Sort directories to ensure consistent ordering when recursing
> dirs.sort()
> files.sort()
>
> - for f in files:
> - path = os.path.join(root, f)
> + def process(path):
> s = os.lstat(path)
>
> - # Hash file path
> - update_hash(path + '\n')
> + if stat.S_ISDIR(s.st_mode):
> + update_hash('d')
> + elif stat.S_ISCHR(s.st_mode):
> + update_hash('c')
> + elif stat.S_ISBLK(s.st_mode):
> + update_hash('b')
> + elif stat.S_ISSOCK(s.st_mode):
> + update_hash('s')
> + elif stat.S_ISLNK(s.st_mode):
> + update_hash('l')
> + elif stat.S_ISFIFO(s.st_mode):
> + update_hash('p')
> + else:
> + update_hash('-')
> +
> + def add_perm(mask, on, off='-'):
> + if mask & s.st_mode:
> + update_hash(on)
> + else:
> + update_hash(off)
> +
> + add_perm(stat.S_IRUSR, 'r')
> + add_perm(stat.S_IWUSR, 'w')
> + if stat.S_ISUID & s.st_mode:
> + add_perm(stat.S_IXUSR, 's', 'S')
> + else:
> + add_perm(stat.S_IXUSR, 'x')
>
> - # Hash file mode
> - update_hash("\tmode=0x%x\n" % stat.S_IMODE(s.st_mode))
> - update_hash("\ttype=0x%x\n" % stat.S_IFMT(s.st_mode))
> + add_perm(stat.S_IRGRP, 'r')
> + add_perm(stat.S_IWGRP, 'w')
> + if stat.S_ISGID & s.st_mode:
> + add_perm(stat.S_IXGRP, 's', 'S')
> + else:
> + add_perm(stat.S_IXGRP, 'x')
>
> - if stat.S_ISBLK(s.st_mode) or stat.S_ISBLK(s.st_mode):
> - # Hash device major and minor
> - update_hash("\tdev=%d,%d\n" % (os.major(s.st_rdev), os.minor(s.st_rdev)))
> - elif stat.S_ISLNK(s.st_mode):
> - # Hash symbolic link
> - update_hash("\tsymlink=%s\n" % os.readlink(path))
> + add_perm(stat.S_IROTH, 'r')
> + add_perm(stat.S_IWOTH, 'w')
> + if stat.S_ISVTX & s.st_mode:
> + update_hash('t')
> + else:
> + add_perm(stat.S_IXOTH, 'x')
> +
> + if include_owners:
> + #update_hash(" %5d" % s.st_uid)
> + #update_hash(" %5d" % s.st_gid)
left-overs from development ?
> + update_hash(" %10s" % pwd.getpwuid(s.st_uid).pw_name)
> + update_hash(" %10s" % grp.getgrgid(s.st_gid).gr_name)
> +
> + if stat.S_ISBLK(s.st_mode) or stat.S_ISCHR(s.st_mode):
> + update_hash(" %9s" % ("%d.%d" % (os.major(s.st_rdev), os.minor(s.st_rdev))))
> else:
> + update_hash(" " * 10)
> +
> + if stat.S_ISREG(s.st_mode):
> + update_hash(" %10d" % s.st_size)
> + else:
> + update_hash(" " * 11)
> +
> + update_hash(" %s" % path)
> +
> + if stat.S_ISLNK(s.st_mode):
> + update_hash(" -> %s" % os.readlink(path))
> +
> + if stat.S_ISREG(s.st_mode):
> fh = hashlib.sha256()
> # Hash file contents
> with open(path, 'rb') as d:
> for chunk in iter(lambda: d.read(4096), b""):
> fh.update(chunk)
> - update_hash("\tdigest=%s\n" % fh.hexdigest())
> + update_hash(" %s" % fh.hexdigest())
> +
> + update_hash("\n")
> +
> + # Process this directory and all its child files
> + process(root)
> + for f in files:
> + if f == 'fixmepath':
> + continue
> + process(os.path.join(root, f))
> finally:
> os.chdir(prev_dir)
>
>
^ permalink raw reply [flat|nested] 5+ messages in thread* Re: [PATCH] classes/sstate: Update output hash
2019-01-15 19:39 [PATCH] classes/sstate: Update output hash Joshua Watt
2019-01-15 20:16 ` Jacob Kroon
2019-01-15 20:49 ` Jacob Kroon
@ 2019-01-15 22:00 ` Richard Purdie
2019-01-21 22:39 ` [PATCH v2] " Joshua Watt
3 siblings, 0 replies; 5+ messages in thread
From: Richard Purdie @ 2019-01-15 22:00 UTC (permalink / raw)
To: Joshua Watt, openembedded-core; +Cc: Peter Kjellerstedt
On Tue, 2019-01-15 at 13:39 -0600, Joshua Watt wrote:
> Updates the output hash calculation for determining if tasks are
> equivalent. The new algorithm does the following based on feedback:
> 1) All files are printed in a single line tabular format
> 2) Prints the file type and mode in a user-friendly ls-like format
> 3) Includes the file owner and group (by name, not ID). These are
> only
> included if the task is run under pseudo, since that is the only
> time they can be consistently determined.
> 4) File size is included for regular files
>
> Signed-off-by: Joshua Watt <JPEWhacker@gmail.com>
> ---
> meta/classes/sstate.bbclass | 91 +++++++++++++++++++++++++++++++--
> ----
> 1 file changed, 76 insertions(+), 15 deletions(-)
I've not really looked at the code itself yet but could we turn this
into a function in lib/oe/sstate*.py somewhere please?
I'd really like to start getting some of the python code into strong
function libraries where it makes sense and this lends itself toa
library function.
Cheers,
Richard
^ permalink raw reply [flat|nested] 5+ messages in thread
* [PATCH v2] classes/sstate: Update output hash
2019-01-15 19:39 [PATCH] classes/sstate: Update output hash Joshua Watt
` (2 preceding siblings ...)
2019-01-15 22:00 ` Richard Purdie
@ 2019-01-21 22:39 ` Joshua Watt
3 siblings, 0 replies; 5+ messages in thread
From: Joshua Watt @ 2019-01-21 22:39 UTC (permalink / raw)
To: openembedded-core; +Cc: peter.kjellerstedt
Updates the output hash calculation for determining if tasks are
equivalent. The new algorithm does the following based on feedback:
1) The output hash function was moved to the OE library.
2) All files are printed in a single line tabular format
3) Prints the file type and mode in a user-friendly ls-like format
4) Includes the file owner and group (by name, not ID). These are only
included if the task is run under pseudo since that is the only time
they can be consistently determined.
5) File size is included for regular files
Signed-off-by: Joshua Watt <JPEWhacker@gmail.com>
---
meta/classes/sstate.bbclass | 65 +----------------
meta/lib/oe/sstatesig.py | 139 +++++++++++++++++++++++++++++++++++-
2 files changed, 139 insertions(+), 65 deletions(-)
diff --git a/meta/classes/sstate.bbclass b/meta/classes/sstate.bbclass
index 763fce07f95..2f0bbd2d7df 100644
--- a/meta/classes/sstate.bbclass
+++ b/meta/classes/sstate.bbclass
@@ -83,9 +83,9 @@ SSTATE_SIG_PASSPHRASE ?= ""
# Whether to verify the GnUPG signatures when extracting sstate archives
SSTATE_VERIFY_SIG ?= "0"
-SSTATE_HASHEQUIV_METHOD ?= "OEOuthashBasic"
-SSTATE_HASHEQUIV_METHOD[doc] = "The function used to calculate the output hash \
- for a task, which in turn is used to determine equivalency. \
+SSTATE_HASHEQUIV_METHOD ?= "oe.sstatesig.OEOuthashBasic"
+SSTATE_HASHEQUIV_METHOD[doc] = "The fully-qualified function used to calculate \
+ the output hash for a task, which in turn is used to determine equivalency. \
"
SSTATE_HASHEQUIV_SERVER ?= ""
@@ -782,65 +782,6 @@ python sstate_sign_package () {
d.getVar('SSTATE_SIG_PASSPHRASE'), armor=False)
}
-def OEOuthashBasic(path, sigfile, task, d):
- import hashlib
- import stat
-
- def update_hash(s):
- s = s.encode('utf-8')
- h.update(s)
- if sigfile:
- sigfile.write(s)
-
- h = hashlib.sha256()
- prev_dir = os.getcwd()
-
- try:
- os.chdir(path)
-
- update_hash("OEOuthashBasic\n")
-
- # It is only currently useful to get equivalent hashes for things that
- # can be restored from sstate. Since the sstate object is named using
- # SSTATE_PKGSPEC and the task name, those should be included in the
- # output hash calculation.
- update_hash("SSTATE_PKGSPEC=%s\n" % d.getVar('SSTATE_PKGSPEC'))
- update_hash("task=%s\n" % task)
-
- for root, dirs, files in os.walk('.', topdown=True):
- # Sort directories and files to ensure consistent ordering
- dirs.sort()
- files.sort()
-
- for f in files:
- path = os.path.join(root, f)
- s = os.lstat(path)
-
- # Hash file path
- update_hash(path + '\n')
-
- # Hash file mode
- update_hash("\tmode=0x%x\n" % stat.S_IMODE(s.st_mode))
- update_hash("\ttype=0x%x\n" % stat.S_IFMT(s.st_mode))
-
- if stat.S_ISBLK(s.st_mode) or stat.S_ISBLK(s.st_mode):
- # Hash device major and minor
- update_hash("\tdev=%d,%d\n" % (os.major(s.st_rdev), os.minor(s.st_rdev)))
- elif stat.S_ISLNK(s.st_mode):
- # Hash symbolic link
- update_hash("\tsymlink=%s\n" % os.readlink(path))
- else:
- fh = hashlib.sha256()
- # Hash file contents
- with open(path, 'rb') as d:
- for chunk in iter(lambda: d.read(4096), b""):
- fh.update(chunk)
- update_hash("\tdigest=%s\n" % fh.hexdigest())
- finally:
- os.chdir(prev_dir)
-
- return h.hexdigest()
-
python sstate_report_unihash() {
report_unihash = getattr(bb.parse.siggen, 'report_unihash', None)
diff --git a/meta/lib/oe/sstatesig.py b/meta/lib/oe/sstatesig.py
index e0eb87e29f0..a83af519ec1 100644
--- a/meta/lib/oe/sstatesig.py
+++ b/meta/lib/oe/sstatesig.py
@@ -270,7 +270,7 @@ class SignatureGeneratorOEEquivHash(SignatureGeneratorOEBasicHash):
super().init_rundepcheck(data)
self.server = data.getVar('SSTATE_HASHEQUIV_SERVER')
self.method = data.getVar('SSTATE_HASHEQUIV_METHOD')
- self.unihashes = bb.persist_data.persist('SSTATESIG_UNIHASH_CACHE_v1_' + self.method, data)
+ self.unihashes = bb.persist_data.persist('SSTATESIG_UNIHASH_CACHE_v1_' + self.method.replace('.', '_'), data)
def get_taskdata(self):
return (self.server, self.method) + super().get_taskdata()
@@ -355,6 +355,7 @@ class SignatureGeneratorOEEquivHash(SignatureGeneratorOEBasicHash):
import json
import tempfile
import base64
+ import importlib
taskhash = d.getVar('BB_TASKHASH')
unihash = d.getVar('BB_UNIHASH')
@@ -376,11 +377,14 @@ class SignatureGeneratorOEEquivHash(SignatureGeneratorOEBasicHash):
sigfile_link = "depsig.do_%s" % task
try:
- call = self.method + '(path, sigfile, task, d)'
sigfile = open(os.path.join(tempdir, sigfile_name), 'w+b')
+
locs = {'path': path, 'sigfile': sigfile, 'task': task, 'd': d}
- outhash = bb.utils.better_eval(call, locs)
+ (module, method) = self.method.rsplit('.', 1)
+ locs['method'] = getattr(importlib.import_module(module), method)
+
+ outhash = bb.utils.better_eval('method(path, sigfile, task, d)', locs)
try:
url = '%s/v1/equivalent' % self.server
@@ -581,4 +585,133 @@ def find_sstate_manifest(taskdata, taskdata2, taskname, d, multilibcache):
bb.warn("Manifest %s not found in %s (variant '%s')?" % (manifest, d2.expand(" ".join(pkgarchs)), variant))
return None, d2
+def OEOuthashBasic(path, sigfile, task, d):
+ """
+ Basic output hash function
+
+ Calculates the output hash of a task by hashing all output file metadata,
+ and file contents.
+ """
+ import hashlib
+ import stat
+ import pwd
+ import grp
+
+ def update_hash(s):
+ s = s.encode('utf-8')
+ h.update(s)
+ if sigfile:
+ sigfile.write(s)
+
+ h = hashlib.sha256()
+ prev_dir = os.getcwd()
+ include_owners = os.environ.get('PSEUDO_DISABLED') == '0'
+
+ try:
+ os.chdir(path)
+
+ update_hash("OEOuthashBasic\n")
+
+ # It is only currently useful to get equivalent hashes for things that
+ # can be restored from sstate. Since the sstate object is named using
+ # SSTATE_PKGSPEC and the task name, those should be included in the
+ # output hash calculation.
+ update_hash("SSTATE_PKGSPEC=%s\n" % d.getVar('SSTATE_PKGSPEC'))
+ update_hash("task=%s\n" % task)
+
+ for root, dirs, files in os.walk('.', topdown=True):
+ # Sort directories to ensure consistent ordering when recursing
+ dirs.sort()
+ files.sort()
+
+ def process(path):
+ s = os.lstat(path)
+
+ if stat.S_ISDIR(s.st_mode):
+ update_hash('d')
+ elif stat.S_ISCHR(s.st_mode):
+ update_hash('c')
+ elif stat.S_ISBLK(s.st_mode):
+ update_hash('b')
+ elif stat.S_ISSOCK(s.st_mode):
+ update_hash('s')
+ elif stat.S_ISLNK(s.st_mode):
+ update_hash('l')
+ elif stat.S_ISFIFO(s.st_mode):
+ update_hash('p')
+ else:
+ update_hash('-')
+
+ def add_perm(mask, on, off='-'):
+ if mask & s.st_mode:
+ update_hash(on)
+ else:
+ update_hash(off)
+
+ add_perm(stat.S_IRUSR, 'r')
+ add_perm(stat.S_IWUSR, 'w')
+ if stat.S_ISUID & s.st_mode:
+ add_perm(stat.S_IXUSR, 's', 'S')
+ else:
+ add_perm(stat.S_IXUSR, 'x')
+
+ add_perm(stat.S_IRGRP, 'r')
+ add_perm(stat.S_IWGRP, 'w')
+ if stat.S_ISGID & s.st_mode:
+ add_perm(stat.S_IXGRP, 's', 'S')
+ else:
+ add_perm(stat.S_IXGRP, 'x')
+
+ add_perm(stat.S_IROTH, 'r')
+ add_perm(stat.S_IWOTH, 'w')
+ if stat.S_ISVTX & s.st_mode:
+ update_hash('t')
+ else:
+ add_perm(stat.S_IXOTH, 'x')
+
+ if include_owners:
+ update_hash(" %10s" % pwd.getpwuid(s.st_uid).pw_name)
+ update_hash(" %10s" % grp.getgrgid(s.st_gid).gr_name)
+
+ update_hash(" ")
+ if stat.S_ISBLK(s.st_mode) or stat.S_ISCHR(s.st_mode):
+ update_hash("%9s" % ("%d.%d" % (os.major(s.st_rdev), os.minor(s.st_rdev))))
+ else:
+ update_hash(" " * 9)
+
+ update_hash(" ")
+ if stat.S_ISREG(s.st_mode):
+ update_hash("%10d" % s.st_size)
+ else:
+ update_hash(" " * 10)
+
+ update_hash(" ")
+ fh = hashlib.sha256()
+ if stat.S_ISREG(s.st_mode):
+ # Hash file contents
+ with open(path, 'rb') as d:
+ for chunk in iter(lambda: d.read(4096), b""):
+ fh.update(chunk)
+ update_hash(fh.hexdigest())
+ else:
+ update_hash(" " * len(fh.hexdigest()))
+
+ update_hash(" %s" % path)
+
+ if stat.S_ISLNK(s.st_mode):
+ update_hash(" -> %s" % os.readlink(path))
+
+ update_hash("\n")
+
+ # Process this directory and all its child files
+ process(root)
+ for f in files:
+ if f == 'fixmepath':
+ continue
+ process(os.path.join(root, f))
+ finally:
+ os.chdir(prev_dir)
+
+ return h.hexdigest()
+
--
2.20.1
^ permalink raw reply related [flat|nested] 5+ messages in thread