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Enable log_backtrace() on Mac OS X (untested)

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This commit is contained in:
Andrew Bettison 2012-07-25 18:19:32 +09:30
parent e9abed6efb
commit 6b23bcba51
1 changed files with 17 additions and 8 deletions
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25
log.c
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@ -26,6 +26,9 @@ Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
#include <sys/types.h>
#include <sys/wait.h>
#include <time.h>
#ifdef __APPLE__
#include <mach-o/dyld.h>
#endif
unsigned int debug = 0;
@ -315,21 +318,21 @@ size_t toprint_strlen(ssize_t dstStrLen, const char *srcBuf, size_t srcBytes)
/* Read the symbolic link into the supplied buffer and add a terminating nul. Return -1 if the
* buffer is too short to hold the link content and the nul. If readlink(2) returns an error, then
* logs it and returns -1. Otherwise, returns the number of bytes read, excluding the terminating
* nul, ie, returns what readlink(2) returns. If the 'len' argument is given as zero, then returns
* the number of bytes that would be read, by calling lstat(2) instead of readlink(2). Beware of
* the following race condition: a symbolic link may be altered between calling the lstat(2) and
* readlink(2), so the following apparently overflow-proof code may still fail from a buffer
* overflow in the second call to read_symlink():
* logs it and returns -1. Otherwise, returns the number of bytes read, including the terminating
* nul, ie, returns what readlink(2) returns plus one. If the 'len' argument is given as zero, then
* returns the number of bytes that would be read, by calling lstat(2) instead of readlink(2), plus
* one for the terminating nul. Beware of the following race condition: a symbolic link may be
* altered between calling the lstat(2) and readlink(2), so the following apparently overflow-proof
* code may still fail from a buffer overflow in the second call to read_symlink():
*
* char *readlink_malloc(const char *path) {
* ssize_t len = read_symlink(path, NULL, 0);
* if (len == -1)
* return NULL;
* char *buf = malloc(len + 1);
* char *buf = malloc(len);
* if (buf == NULL)
* return NULL;
* if (read_symlink(path, buf, len + 1) == -1) {
* if (read_symlink(path, buf, len) == -1) {
* free(buf);
* return NULL;
* }
@ -359,6 +362,12 @@ ssize_t get_self_executable_path(char *buf, size_t len)
{
#ifdef linux
return read_symlink("/proc/self/exe", buf, len);
#endif
#ifdef __APPLE__
// Mac OS X
// TODO: Not tested
uint32_t bufsize = len;
return _NSGetExecutablePath(buf, &bufsize) == -1 && len ? -1 : bufsize;
#endif
return WHYF("Not implemented");
}