diff options
Diffstat (limited to 'arch/um')
| -rw-r--r-- | arch/um/include/os.h | 12 | ||||
| -rw-r--r-- | arch/um/os-Linux/file.c | 14 | ||||
| -rw-r--r-- | arch/um/os-Linux/main.c | 12 | ||||
| -rw-r--r-- | arch/um/os-Linux/mem.c | 5 | ||||
| -rw-r--r-- | arch/um/os-Linux/signal.c | 3 | ||||
| -rw-r--r-- | arch/um/os-Linux/start_up.c | 2 |
6 files changed, 28 insertions, 20 deletions
diff --git a/arch/um/include/os.h b/arch/um/include/os.h index 6f0d1c741bc..82e5aeae2b8 100644 --- a/arch/um/include/os.h +++ b/arch/um/include/os.h @@ -137,24 +137,24 @@ extern int os_set_owner(int fd, int pid); extern int os_mode_fd(int fd, int mode); extern int os_seek_file(int fd, unsigned long long offset); -extern int os_open_file(char *file, struct openflags flags, int mode); +extern int os_open_file(const char *file, struct openflags flags, int mode); extern int os_read_file(int fd, void *buf, int len); extern int os_write_file(int fd, const void *buf, int count); -extern int os_file_size(char *file, unsigned long long *size_out); -extern int os_file_modtime(char *file, unsigned long *modtime); +extern int os_file_size(const char *file, unsigned long long *size_out); +extern int os_file_modtime(const char *file, unsigned long *modtime); extern int os_pipe(int *fd, int stream, int close_on_exec); extern int os_set_fd_async(int fd, int owner); extern int os_clear_fd_async(int fd); extern int os_set_fd_block(int fd, int blocking); extern int os_accept_connection(int fd); -extern int os_create_unix_socket(char *file, int len, int close_on_exec); +extern int os_create_unix_socket(const char *file, int len, int close_on_exec); extern int os_shutdown_socket(int fd, int r, int w); extern void os_close_file(int fd); extern int os_rcv_fd(int fd, int *helper_pid_out); extern int create_unix_socket(char *file, int len, int close_on_exec); -extern int os_connect_socket(char *name); +extern int os_connect_socket(const char *name); extern int os_file_type(char *file); -extern int os_file_mode(char *file, struct openflags *mode_out); +extern int os_file_mode(const char *file, struct openflags *mode_out); extern int os_lock_file(int fd, int excl); extern void os_flush_stdout(void); extern int os_stat_filesystem(char *path, long *bsize_out, diff --git a/arch/um/os-Linux/file.c b/arch/um/os-Linux/file.c index f8346275862..c3bb5ce70c9 100644 --- a/arch/um/os-Linux/file.c +++ b/arch/um/os-Linux/file.c @@ -19,7 +19,7 @@ #include "user.h" #include "kern_util.h" -static void copy_stat(struct uml_stat *dst, struct stat64 *src) +static void copy_stat(struct uml_stat *dst, const struct stat64 *src) { *dst = ((struct uml_stat) { .ust_dev = src->st_dev, /* device */ @@ -168,7 +168,7 @@ int os_file_type(char *file) else return OS_TYPE_FILE; } -int os_file_mode(char *file, struct openflags *mode_out) +int os_file_mode(const char *file, struct openflags *mode_out) { int err; @@ -189,7 +189,7 @@ int os_file_mode(char *file, struct openflags *mode_out) return err; } -int os_open_file(char *file, struct openflags flags, int mode) +int os_open_file(const char *file, struct openflags flags, int mode) { int fd, err, f = 0; @@ -216,7 +216,7 @@ int os_open_file(char *file, struct openflags flags, int mode) return fd; } -int os_connect_socket(char *name) +int os_connect_socket(const char *name) { struct sockaddr_un sock; int fd, err; @@ -277,7 +277,7 @@ int os_write_file(int fd, const void *buf, int len) return n; } -int os_file_size(char *file, unsigned long long *size_out) +int os_file_size(const char *file, unsigned long long *size_out) { struct uml_stat buf; int err; @@ -314,7 +314,7 @@ int os_file_size(char *file, unsigned long long *size_out) return 0; } -int os_file_modtime(char *file, unsigned long *modtime) +int os_file_modtime(const char *file, unsigned long *modtime) { struct uml_stat buf; int err; @@ -514,7 +514,7 @@ int os_rcv_fd(int fd, int *helper_pid_out) return new; } -int os_create_unix_socket(char *file, int len, int close_on_exec) +int os_create_unix_socket(const char *file, int len, int close_on_exec) { struct sockaddr_un addr; int sock, err; diff --git a/arch/um/os-Linux/main.c b/arch/um/os-Linux/main.c index 82c3778627b..de664e7ff31 100644 --- a/arch/um/os-Linux/main.c +++ b/arch/um/os-Linux/main.c @@ -73,7 +73,7 @@ static void install_fatal_handler(int sig) action.sa_handler = last_ditch_exit; if (sigaction(sig, &action, NULL) < 0) { printf("failed to install handler for signal %d - errno = %d\n", - errno); + sig, errno); exit(1); } } @@ -92,7 +92,8 @@ static void setup_env_path(void) * just use the default + /usr/lib/uml */ if (!old_path || (path_len = strlen(old_path)) == 0) { - putenv("PATH=:/bin:/usr/bin/" UML_LIB_PATH); + if (putenv("PATH=:/bin:/usr/bin/" UML_LIB_PATH)) + perror("couldn't putenv"); return; } @@ -100,11 +101,14 @@ static void setup_env_path(void) path_len += strlen("PATH=" UML_LIB_PATH) + 1; new_path = malloc(path_len); if (!new_path) { - perror("coudn't malloc to set a new PATH"); + perror("couldn't malloc to set a new PATH"); return; } snprintf(new_path, path_len, "PATH=%s" UML_LIB_PATH, old_path); - putenv(new_path); + if (putenv(new_path)) { + perror("couldn't putenv to set a new PATH"); + free(new_path); + } } extern int uml_exitcode; diff --git a/arch/um/os-Linux/mem.c b/arch/um/os-Linux/mem.c index 436f8d20b20..c3b736adc1d 100644 --- a/arch/um/os-Linux/mem.c +++ b/arch/um/os-Linux/mem.c @@ -172,13 +172,15 @@ int __init make_tempfile(const char *template, char **out_tempname, which_tmpdir(); tempname = malloc(MAXPATHLEN); + if (!tempname) + goto out; find_tempdir(); if (template[0] != '/') strcpy(tempname, tempdir); else tempname[0] = '\0'; - strcat(tempname, template); + strncat(tempname, template, MAXPATHLEN-1-strlen(tempname)); fd = mkstemp(tempname); if(fd < 0){ fprintf(stderr, "open - cannot create %s: %s\n", tempname, @@ -268,6 +270,7 @@ void __init check_tmpexec(void) if(addr == MAP_FAILED){ err = errno; perror("failed"); + close(fd); if(err == EPERM) printf("%s must be not mounted noexec\n",tempdir); exit(1); diff --git a/arch/um/os-Linux/signal.c b/arch/um/os-Linux/signal.c index e9800b0b568..37302e86fda 100644 --- a/arch/um/os-Linux/signal.c +++ b/arch/um/os-Linux/signal.c @@ -183,7 +183,8 @@ int change_sig(int signal, int on) sigemptyset(&sigset); sigaddset(&sigset, signal); - sigprocmask(on ? SIG_UNBLOCK : SIG_BLOCK, &sigset, &old); + if (sigprocmask(on ? SIG_UNBLOCK : SIG_BLOCK, &sigset, &old) < 0) + return -errno; return !sigismember(&old, signal); } diff --git a/arch/um/os-Linux/start_up.c b/arch/um/os-Linux/start_up.c index 7b81f6c08a5..c6cf648a51d 100644 --- a/arch/um/os-Linux/start_up.c +++ b/arch/um/os-Linux/start_up.c @@ -63,7 +63,7 @@ static int ptrace_child(void) _exit(ret); } -static void fatal_perror(char *str) +static void fatal_perror(const char *str) { perror(str); exit(1); |