diff options
Diffstat (limited to 'exec/exec.c')
| -rw-r--r-- | exec/exec.c | 124 |
1 files changed, 0 insertions, 124 deletions
diff --git a/exec/exec.c b/exec/exec.c index 6eb81c8a..201e629a 100644 --- a/exec/exec.c +++ b/exec/exec.c @@ -7,9 +7,6 @@ #ifdef GZIP Can gunzip executables into core on the fly. #endif - #ifdef BZIP2 - Can bunzip2 executables into core on the fly. - #endif This file is part of the GNU Hurd. @@ -52,10 +49,6 @@ pthread_rwlock_t std_lock = PTHREAD_RWLOCK_INITIALIZER; static void check_gzip (struct execdata *); #endif -#ifdef BZIP2 -static void check_bzip2 (struct execdata *); -#endif - /* Zero the specified region but don't crash the server if it faults. */ #include <hurd/sigpreempt.h> @@ -838,105 +831,6 @@ check_gzip (struct execdata *earg) prepare_in_memory (e); } #endif - -#ifdef BZIP2 -/* Check the file for being a bzip2'd image. Return with ENOEXEC means not - a valid bzip2 file; return with another error means lossage in decoding; - return with zero means the file was uncompressed into memory which E now - points to, and `check' can be run again. */ - -static void -check_bzip2 (struct execdata *earg) -{ - struct execdata *e = earg; - /* Entry points to bunzip2 engine. */ - void do_bunzip2 (void); - /* Callbacks from unzip for I/O and error interface. */ - extern int (*unzip_read) (char *buf, size_t maxread); - extern void (*unzip_write) (const char *buf, size_t nwrite); - extern void (*unzip_read_error) (void); - extern void (*unzip_error) (const char *msg); - - char *zipdata = NULL; - size_t zipdatasz = 0; - FILE *zipout = NULL; - jmp_buf ziperr; - off_t zipread_pos = 0; - int zipread (char *buf, size_t maxread) - { - char *contents = map (e, zipread_pos, 1); - size_t n; - if (contents == NULL) - { - errno = e->error; - return -1; - } - n = MIN (maxread, map_buffer (e) + map_fsize (e) - contents); - errno = hurd_safe_copyin (buf, contents, n); /* XXX/fault */ - if (errno) - longjmp (ziperr, 2); - - zipread_pos += n; - return n; - } - void zipwrite (const char *buf, size_t nwrite) - { - if (fwrite (buf, nwrite, 1, zipout) != 1) - longjmp (ziperr, 1); - } - void ziprderr (void) - { - errno = ENOEXEC; - longjmp (ziperr, 2); - } - void ziperror (const char *msg) - { - errno = ENOEXEC; - longjmp (ziperr, 2); - } - - unzip_read = zipread; - unzip_write = zipwrite; - unzip_read_error = ziprderr; - unzip_error = ziperror; - - if (setjmp (ziperr)) - { - /* Error in unzipping jumped out. */ - if (zipout) - { - fclose (zipout); - free (zipdata); - } - e->error = errno; - return; - } - - zipout = open_memstream (&zipdata, &zipdatasz); - if (! zipout) - { - e->error = errno; - return; - } - - /* Call the bunzip2 engine. */ - do_bunzip2 (); - - /* The output is complete. Clean up the stream and store its resultant - buffer and size in the execdata as the file contents. */ - fclose (zipout); - - /* Clean up the old exec file stream's state. - Now that we have the contents all in memory (in E->file_data), - nothing will in fact ever try to use E->stream again. */ - finish (e, 0); - - /* Prepare the stream state to use the file contents already in memory. */ - e->file_data = zipdata; - e->file_size = zipdatasz; - prepare_in_memory (e); -} -#endif static inline void * @@ -1014,24 +908,6 @@ do_exec (file_t file, check (e); } #endif -#ifdef BZIP2 - if (e->error == ENOEXEC) - { - /* See if it is a compressed image. */ - static pthread_mutex_t lock = PTHREAD_MUTEX_INITIALIZER; - /* The bzip2 code is really cheesy, not even close to thread-safe. - So we serialize all uses of it. */ - pthread_mutex_lock (&lock); - e->error = 0; - check_bzip2 (e); - pthread_mutex_unlock (&lock); - if (e->error == 0) - /* The file was uncompressed into memory, and now E describes the - uncompressed image rather than the actual file. Check it again - for a valid magic number. */ - check (e); - } -#endif } |