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qnx: Implemented SDL_GetBasePath().

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icculus committed Aug 17, 2017
1 parent adecda5 commit c13c45c7bea1afc178344c65adef514b238020ad
Showing with 36 additions and 2 deletions.
  1. +36 −2 src/filesystem/unix/SDL_sysfilesystem.c
@@ -32,6 +32,7 @@
#include <sys/stat.h>
#include <sys/types.h>
#include <limits.h>
#include <fcntl.h>

#if defined(__FREEBSD__) || defined(__OPENBSD__)
#include <sys/sysctl.h>
@@ -41,6 +42,37 @@
#include "SDL_stdinc.h"
#include "SDL_filesystem.h"

/* QNX's /proc/self/exefile is a text file and not a symlink. */
#if defined(__QNXNTO__)
static char *
readWholeFile(const char *path)
{
char *retval = (char *) SDL_malloc(PATH_MAX+1);
if (retval != NULL)
{
const int fd = open(path, O_RDONLY);
const ssize_t br = (fd == -1) ? -1 : read(fd, retval, PATH_MAX);
char *ptr;

if (fd != -1)
close(fd);

if ((br < 0) || (br > PATH_MAX))
{
free(retval);
return NULL;
} /* if */

retval[br] = '\0';

ptr = (char *) SDL_realloc(retval, br + 1);
if (ptr != NULL) /* just shrinking buffer; don't care if it failed. */
retval = ptr;
} /* else */

return retval;
}
#else
static char *
readSymLink(const char *path)
{
@@ -72,7 +104,7 @@ readSymLink(const char *path)
SDL_free(retval);
return NULL;
}

#endif

char *
SDL_GetBasePath(void)
@@ -126,9 +158,10 @@ SDL_GetBasePath(void)
retval = readSymLink("/proc/curproc/file");
#elif defined(__NETBSD__)
retval = readSymLink("/proc/curproc/exe");
#elif defined(__QNXNTO__)
retval = readWholeFile("/proc/self/exefile");
#else
retval = readSymLink("/proc/self/exe"); /* linux. */
#endif
if (retval == NULL) {
/* older kernels don't have /proc/self ... try PID version... */
char path[64];
@@ -139,6 +172,7 @@ SDL_GetBasePath(void)
retval = readSymLink(path);
}
}
#endif
}

/* If we had access to argv[0] here, we could check it for a path,

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