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Fix the build issue on GNU/Hurd 

PATH_MAX isn't defined on GNU/Hurd. according to the porting guidelines
(https://www.gnu.org/software/hurd/hurd/porting/guidelines.html)
allocate a memory dynamically instead of relying on the length of
a string with PATH_MAX.

https://bugs.freedesktop.org/show_bug.cgi?id=97512
This commit is contained in:
Akira TAGOH 2017-03-01 19:48:02 +09:00
parent 9878b306f6
commit abdb6d658e
3 changed files with 44 additions and 8 deletions
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34
src/fcdefault.c
View File

@ -148,17 +148,34 @@ retry:
prgname = FcStrdup ("");
#else
# if defined (HAVE_GETEXECNAME)
const char *p = getexecname ();
char *p = FcStrdup(getexecname ());
# elif defined (HAVE_READLINK)
char buf[PATH_MAX + 1];
int len;
size_t size = FC_PATH_MAX;
char *p = NULL;
len = readlink ("/proc/self/exe", buf, sizeof (buf) - 1);
if (len != -1)
while (1)
{
buf[len] = '\0';
p = buf;
char *buf = malloc (size);
ssize_t len;
if (!buf)
break;
len = readlink ("/proc/self/exe", buf, size - 1);
if (len < 0)
{
free (buf);
break;
}
if (len < size - 1)
{
buf[len] = 0;
p = buf;
break;
}
free (buf);
size *= 2;
}
# else
char *p = NULL;
@ -176,6 +193,9 @@ retry:
if (!prgname)
prgname = FcStrdup ("");
if (p)
free (p);
#endif
if (!fc_atomic_ptr_cmpexch (&default_prgname, NULL, prgname)) {

6
src/fcint.h
View File

@ -70,6 +70,12 @@ extern pfnSHGetFolderPathA pSHGetFolderPathA;
# define FC_DIR_SEPARATOR_S "/"
#endif
#ifdef PATH_MAX
#define FC_PATH_MAX PATH_MAX
#else
#define FC_PATH_MAX 128
#endif
#if __GNUC__ >= 4
#define FC_UNUSED __attribute__((unused))
#else

12
src/fcstat.c
View File

@ -278,8 +278,13 @@ FcDirChecksum (const FcChar8 *dir, time_t *checksum)
{
#endif
struct stat statb;
char f[PATH_MAX + 1];
char *f = malloc (len + 1 + dlen + 1);
if (!f)
{
ret = -1;
goto bail;
}
memcpy (f, dir, len);
f[len] = FC_DIR_SEPARATOR;
memcpy (&f[len + 1], files[n]->d_name, dlen);
@ -287,11 +292,16 @@ FcDirChecksum (const FcChar8 *dir, time_t *checksum)
if (lstat (f, &statb) < 0)
{
ret = -1;
free (f);
goto bail;
}
if (S_ISDIR (statb.st_mode))
{
free (f);
goto bail;
}
free (f);
dtype = statb.st_mode;
#ifdef HAVE_STRUCT_DIRENT_D_TYPE
}