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| 2020-10-31 | pack: Relocatable wrapper leaves root available to child processes....Fixes <https://bugs.gnu.org/44261>.
Reported by Jan Nieuwenhuizen <janneke@gnu.org>.
* gnu/packages/aux-files/run-in-namespace.c (exec_in_user_namespace):
Add call to 'prctl'. Call 'mount' for NEW_ROOT and define 'is_tmpfs'.
When IS_TMPFS is true, call 'umount' and 'rmdir' after 'waitpid';
otherwise, call 'rm_rf' only when 'waitpid' returns -1 the second time.
(exec_with_loader): Call 'prctl'. Remove NEW_ROOT only when 'waitpid'
returns -1 the second time, otherwise leave it behind.
* tests/guix-pack-relocatable.sh (wait_for_file): New function.
Add test.
| Ludovic Courtès | |
little-endian encoding of n.
contents(path) = the contents of a regular file.
sort(strings) = lexicographic sort by 8-bit value (strcmp).
entries(path) = the entries of a directory, without `.' and
`..'.
`+' denotes string concatenation. */
struct PathFilter
{
virtual ~PathFilter() { }
virtual bool operator () (const Path & path) { return true; }
};
extern PathFilter defaultPathFilter;
void dumpPath(const Path & path, Sink & sink,
PathFilter & filter = defaultPathFilter);
struct ParseSink
{
virtual void createDirectory(const Path & path) { };
virtual void createRegularFile(const Path & path) { };
virtual void isExecutable() { };
virtual void preallocateContents(unsigned long long size) { };
virtual void receiveContents(unsigned char * data, unsigned int len) { };
virtual void createSymlink(const Path & path, const string & target) { };
};
void parseDump(ParseSink & sink, Source & source);
void restorePath(const Path & path, Source & source);
}
