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fix(ci): delegate execvp and posix_spawnp to real glibc symbols for PATH resolution

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Nizz05
2026-09-14 00:17:36 +02:00
parent 565a7d1347
commit 8be95162d2
1 changed files with 54 additions and 6 deletions
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scripts/ci/qemu_intercept.c
+52 -4
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@@ -51,17 +51,47 @@ int execve(const char *pathname, char *const argv[], char *const envp[]) {
} }
int execv(const char *pathname, char *const argv[]) { int execv(const char *pathname, char *const argv[]) {
static int (*real_execv)(const char *, char *const []) = NULL;
if (!real_execv) real_execv = (int (*)(const char *, char *const []))dlsym(RTLD_NEXT, "execv");
if (pathname && is_x86_64_elf(pathname)) {
char **new_argv = build_qemu_argv(pathname, argv);
if (new_argv) {
extern char **environ; extern char **environ;
return execve(pathname, argv, environ); static int (*real_execve_local)(const char *, char *const [], char *const []) = NULL;
if (!real_execve_local) real_execve_local = (int (*)(const char *, char *const [], char *const []))dlsym(RTLD_NEXT, "execve");
return real_execve_local("/usr/bin/qemu-x86_64-static", new_argv, environ);
}
}
return real_execv(pathname, argv);
} }
int execvp(const char *file, char *const argv[]) { int execvp(const char *file, char *const argv[]) {
static int (*real_execvp)(const char *, char *const []) = NULL;
if (!real_execvp) real_execvp = (int (*)(const char *, char *const []))dlsym(RTLD_NEXT, "execvp");
if (file && is_x86_64_elf(file)) {
char **new_argv = build_qemu_argv(file, argv);
if (new_argv) {
extern char **environ; extern char **environ;
return execve(file, argv, environ); static int (*real_execve_local)(const char *, char *const [], char *const []) = NULL;
if (!real_execve_local) real_execve_local = (int (*)(const char *, char *const [], char *const []))dlsym(RTLD_NEXT, "execve");
return real_execve_local("/usr/bin/qemu-x86_64-static", new_argv, environ);
}
}
return real_execvp(file, argv);
} }
int execvpe(const char *file, char *const argv[], char *const envp[]) { int execvpe(const char *file, char *const argv[], char *const envp[]) {
return execve(file, argv, envp); static int (*real_execvpe)(const char *, char *const [], char *const []) = NULL;
if (!real_execvpe) real_execvpe = (int (*)(const char *, char *const [], char *const []))dlsym(RTLD_NEXT, "execvpe");
if (file && is_x86_64_elf(file)) {
char **new_argv = build_qemu_argv(file, argv);
if (new_argv) {
static int (*real_execve_local)(const char *, char *const [], char *const []) = NULL;
if (!real_execve_local) real_execve_local = (int (*)(const char *, char *const [], char *const []))dlsym(RTLD_NEXT, "execve");
return real_execve_local("/usr/bin/qemu-x86_64-static", new_argv, envp);
}
}
return real_execvpe(file, argv, envp);
} }
int posix_spawn(pid_t *pid, const char *path, int posix_spawn(pid_t *pid, const char *path,
@@ -87,5 +117,23 @@ int posix_spawnp(pid_t *pid, const char *file,
const posix_spawn_file_actions_t *file_actions, const posix_spawn_file_actions_t *file_actions,
const posix_spawnattr_t *attrp, const posix_spawnattr_t *attrp,
char *const argv[], char *const envp[]) { char *const argv[], char *const envp[]) {
return posix_spawn(pid, file, file_actions, attrp, argv, envp); static int (*real_posix_spawnp)(pid_t *, const char *, const posix_spawn_file_actions_t *,
const posix_spawnattr_t *, char *const [], char *const []) = NULL;
if (!real_posix_spawnp) {
real_posix_spawnp = (int (*)(pid_t *, const char *, const posix_spawn_file_actions_t *,
const posix_spawnattr_t *, char *const [], char *const []))dlsym(RTLD_NEXT, "posix_spawnp");
}
if (file && is_x86_64_elf(file)) {
char **new_argv = build_qemu_argv(file, argv);
if (new_argv) {
static int (*real_posix_spawn_local)(pid_t *, const char *, const posix_spawn_file_actions_t *,
const posix_spawnattr_t *, char *const [], char *const []) = NULL;
if (!real_posix_spawn_local) {
real_posix_spawn_local = (int (*)(pid_t *, const char *, const posix_spawn_file_actions_t *,
const posix_spawnattr_t *, char *const [], char *const []))dlsym(RTLD_NEXT, "posix_spawn");
}
return real_posix_spawn_local(pid, "/usr/bin/qemu-x86_64-static", file_actions, attrp, new_argv, envp);
}
}
return real_posix_spawnp(pid, file, file_actions, attrp, argv, envp);
} }