diff options
| author | Kalle Olavi Niemitalo <kon@iki.fi> | 2016-08-24 00:41:30 +0300 |
|---|---|---|
| committer | Samuel Thibault <samuel.thibault@ens-lyon.org> | 2016-08-23 23:48:13 +0200 |
| commit | ca5b01f538c122dc1f0e989f5703c75b8cf8ca3a (patch) | |
| tree | 0d6e18976962acf1c9fcaaa9cef0e53a972958d4 /utils/rpctrace.c | |
| parent | 118a5b8c33cc2fad8ccdc5858253e7ed3dfca513 (diff) | |
rpctrace: Print beyond '\0' in MACH_MSG_TYPE_CHAR.
This will now display the 'argv: data_t' argument of file_exec
as e.g. "who\0am\0i\0" rather than just "who". In contrast,
the 'file_name: string_t' argument of dir_lookup will still be
truncated at the first null character.
The previous implementation might crash if an out-of-line
char array exactly fills a page and does not contain any
null characters.
* utils/rpctrace.c (print_data): On MACH_MSG_TYPE_STRING and
MACH_MSG_TYPE_CHAR, check for end of buffer before checking for a null
character. On MACH_MSG_TYPE_CHAR only, continue printing past null
characters.
Diffstat (limited to 'utils/rpctrace.c')
| -rw-r--r-- | utils/rpctrace.c | 3 |
1 files changed, 2 insertions, 1 deletions
diff --git a/utils/rpctrace.c b/utils/rpctrace.c index 276377c0..25d9bc6e 100644 --- a/utils/rpctrace.c +++ b/utils/rpctrace.c @@ -1524,7 +1524,8 @@ print_data (mach_msg_type_name_t type, the first character that has not yet been printed. */ const char *p, *q; p = q = (const char *) data; - while (q && *q && q - (const char *) data < (int) (nelt * eltsize)) + while (q && q - (const char *) data < (int) (nelt * eltsize) + && (*q || type == MACH_MSG_TYPE_CHAR)) { if (isgraph (*q) || *q == ' ') { |