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[skip ci] Solaris getexecname() returns argv[0]

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`argv[0]`/`getexexname()` are not always absolute paths by default and can be modified to anything the developer wants them to be.

Consider using `readSymLink("/proc/self/path/a.out")` instead and `getexecname()` as the fallback, since the symlink will always be the correct absolute path (unless /proc is ot mounted, but it is by default on Solaris and Illumos platforms).

(cherry picked from commit 4f5e9fd5bda0d58c2907f75fa4ea0c92c3a2525f)
This commit is contained in:
Samuel Venable 2022-11-27 21:19:41 -05:00 committed by Ryan C. Gordon
parent 8145212103
commit 0739d237ad
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GPG key ID: FA148B892AB48044
1 changed files with 14 additions and 10 deletions
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24
src/filesystem/unix/SDL_sysfilesystem.c
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@ -208,16 +208,6 @@ SDL_GetBasePath(void)
SDL_free(cmdline);
}
#endif
#if defined(__SOLARIS__)
const char *path = getexecname();
if ((path != NULL) && (path[0] == '/')) { /* must be absolute path... */
retval = SDL_strdup(path);
if (!retval) {
SDL_OutOfMemory();
return NULL;
}
}
#endif
/* is a Linux-style /proc filesystem available? */
if (!retval && (access("/proc", F_OK) == 0)) {
@ -228,6 +218,8 @@ SDL_GetBasePath(void)
retval = readSymLink("/proc/curproc/file");
#elif defined(__NETBSD__)
retval = readSymLink("/proc/curproc/exe");
#elif defined(__SOLARIS__)
retval = readSymLink("/proc/self/path/a.out");
#elif defined(__QNXNTO__)
retval = SDL_LoadFile("/proc/self/exefile", NULL);
#else
@ -245,6 +237,18 @@ SDL_GetBasePath(void)
#endif
}
#if defined(__SOLARIS__) /* try this as a fallback if /proc didn't pan out */
if (!retval) {
const char *path = getexecname();
if ((path != NULL) && (path[0] == '/')) { /* must be absolute path... */
retval = SDL_strdup(path);
if (!retval) {
SDL_OutOfMemory();
return NULL;
}
}
#endif
/* If we had access to argv[0] here, we could check it for a path,
or troll through $PATH looking for it, too. */