Author: "logesh.sekar" Date: Tue, 3 Jun 2025 18:42:54 +0530 Error: FAILED: lib/libfuse3.so.3.17.2.p/mount.c.o powerpc-timesys-linux-uclibcspe-gcc -Ilib/libfuse3.so.3.17.2.p -Ilib -I../lib -Iinclude -I../include -I. -I.. -fdiagnostics-color=always -Wall -Winvalid-pch -Wextra -std=gnu11 -O2 -g -D_REENTRANT -DHAVE_LIBFUSE_PRIVATE_CONFIG_H -Wno-sign-compare -D_FILE_OFFSET_BITS=64 -Wstrict-prototypes -Wmissing-declarations -Wwrite-strings -fno-strict-aliasing -Wno-unused-result -Os -g -pipe -fPIC -pthread -DFUSE_USE_VERSION=317 '-DFUSERMOUNT_DIR="/usr/bin"' -MD -MQ lib/libfuse3.so.3.17.2.p/mount.c.o -MF lib/libfuse3.so.3.17.2.p/mount.c.o.d -o lib/libfuse3.so.3.17.2.p/mount.c.o -c ../lib/mount.c ../lib/mount.c:28:19: fatal error: spawn.h: No such file or directory #include Based on https: https://github.com/libfuse/libfuse/commit/bb9cecbf67341e03e53dd36b8f69520f3a26f834 uclibc doesn't support posix_spawn and provide spawn.h file, so adding fork+exec support for uclibc. --- lib/mount.c | 173 ++++++++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 173 insertions(+) diff --git a/lib/mount.c b/lib/mount.c index 6ed4444..9cdb8f7 100644 --- a/lib/mount.c +++ b/lib/mount.c @@ -25,7 +25,9 @@ #include #include #include +#if !defined(__UCLIBC__) #include +#endif #include #include #include @@ -50,6 +52,12 @@ #define FUSE_COMMFD_ENV "_FUSE_COMMFD" #define FUSE_COMMFD2_ENV "_FUSE_COMMFD2" +#if defined(__UCLIBC__) +#ifndef HAVE_FORK +#define fork() vfork() +#endif +#endif + #ifndef MS_DIRSYNC #define MS_DIRSYNC 128 #endif @@ -126,6 +134,24 @@ static const struct fuse_opt fuse_mount_opts[] = { * * @param out_pid might be NULL */ +#if defined(__UCLIBC__) +static void exec_fusermount(const char *argv[]) + { + execv(FUSERMOUNT_DIR "/" FUSERMOUNT_PROG, (char **) argv); + execvp(FUSERMOUNT_PROG, (char **) argv); +} + +void fuse_mount_version(void) +{ + int pid = fork(); + if (!pid) { + const char *argv[] = { FUSERMOUNT_PROG, "--version", NULL }; + exec_fusermount(argv); + _exit(1); + } else if (pid != -1) + waitpid(pid, NULL, 0); +} +#else static int fusermount_posix_spawn(posix_spawn_file_actions_t *action, char const * const argv[], pid_t *out_pid) { @@ -167,6 +193,7 @@ void fuse_mount_version(void) fuse_log(FUSE_LOG_ERR, "Running '%s --version' failed", FUSERMOUNT_PROG); } +#endif struct mount_flags { const char *opt; @@ -285,7 +312,11 @@ static int receive_fd(int fd) while(((rv = recvmsg(fd, &msg, 0)) == -1) && errno == EINTR); if (rv == -1) { +#if defined(__UCLIBC__) + perror("recvmsg"); +#else fuse_log(FUSE_LOG_ERR, "recvmsg failed: %s", strerror(errno)); +#endif return -1; } if(!rv) { @@ -336,6 +336,22 @@ void fuse_kern_unmount(const char *mountpoint, int fd) if (res == 0) return; +#if defined(__UCLIBC__) + int pid; + pid = fork(); + if(pid == -1) + return; + + if(pid == 0) { + const char *argv[] = { FUSERMOUNT_PROG, "-u", "-q", "-z", + "--", mountpoint, NULL }; + + exec_fusermount(argv); + _exit(1); + } + waitpid(pid, NULL, 0); +} +#else char const * const argv[] = { FUSERMOUNT_PROG, "--unmount", "--quiet", "--lazy", "--", mountpoint, NULL }; @@ -346,6 +395,7 @@ void fuse_kern_unmount(const char *mountpoint, int fd) return; } } +#endif static int setup_auto_unmount(const char *mountpoint, int quiet) { @@ -349,8 +349,13 @@ void fuse_kern_unmount(const char *mountpoint, int fd) static int setup_auto_unmount(const char *mountpoint, int quiet) { +#if defined(__UCLIBC__) + int fds[2], pid; + int rv; +#else int fds[2]; pid_t pid; +#endif int res; if (!mountpoint) { @@ -360,6 +410,52 @@ static int setup_auto_unmount(const char *mountpoint, int quiet) res = socketpair(PF_UNIX, SOCK_STREAM, 0, fds); if(res == -1) { +#if defined(__UCLIBC__) + perror("fuse: socketpair() failed"); + return -1; + } + pid = fork(); + if(pid == -1) { + perror("fuse: fork() failed"); + close(fds[0]); + close(fds[1]); + return -1; + } + // passed to child now, so can close here. + if(pid == 0) { + char env[10]; + const char *argv[32]; + int a = 0; + + if (quiet) { + int fd = open("/dev/null", O_RDONLY); + if (fd != -1) { + dup2(fd, 1); + dup2(fd, 2); + } + } + + argv[a++] = FUSERMOUNT_PROG; + argv[a++] = "--auto-unmount"; + argv[a++] = "--"; + argv[a++] = mountpoint; + argv[a++] = NULL; + + close(fds[1]); + fcntl(fds[0], F_SETFD, 0); + snprintf(env, sizeof(env), "%i", fds[0]); + setenv(FUSE_COMMFD_ENV, env, 1); + exec_fusermount(argv); + perror("fuse: failed to exec fusermount3"); + _exit(1); + } + close(fds[0]); + + // Now fusermount3 will only exit when fds[1] closes automatically when our + // process exits. + return 0; +} +#else fuse_log(FUSE_LOG_ERR, "Setting up auto-unmountsocketpair() failed", strerror(errno)); return -1; @@ -418,6 +514,82 @@ static int setup_auto_unmount(const char *mountpoint, int quiet) return 0; // Note: fds[1] is leakend and doesn't get FD_CLOEXEC } +#endif + +#if defined(__UCLIBC__) +static int fuse_mount_fusermount(const char *mountpoint, struct mount_opts *mo, + const char *opts, int quiet) +{ + int fds[2], pid; + int rv; + int res; + + if (!mountpoint) { + fuse_log(FUSE_LOG_ERR, "fuse: missing mountpoint parameter\n"); + return -1; + } + + res = socketpair(PF_UNIX, SOCK_STREAM, 0, fds); + if(res == -1) { + perror("fuse: socketpair() failed"); + return -1; + } + + pid = fork(); + if(pid == -1) { + perror("fuse: fork() failed"); + close(fds[0]); + close(fds[1]); + return -1; + } + if(pid == 0) { + char env[10]; + const char *argv[32]; + int a = 0; + + if (quiet) { + int fd = open("/dev/null", O_RDONLY); + if (fd != -1) { + dup2(fd, 1); + dup2(fd, 2); + } + } + argv[a++] = FUSERMOUNT_PROG; + if (opts) { + argv[a++] = "-o"; + argv[a++] = opts; + } + argv[a++] = "--"; + argv[a++] = mountpoint; + argv[a++] = NULL; + + + close(fds[1]); + fcntl(fds[0], F_SETFD, 0); + snprintf(env, sizeof(env), "%i", fds[0]); + setenv(FUSE_COMMFD_ENV, env, 1); + exec_fusermount(argv); + perror("fuse: failed to exec fusermount3"); + _exit(1); + } + + close(fds[0]); + + rv = receive_fd(fds[1]); + + if (!mo->auto_unmount) { + /* with auto_unmount option fusermount3 will not exit until + this socket is closed */ + close(fds[1]); + waitpid(pid, NULL, 0); /* bury zombie */ + } + + if (rv >= 0) + fcntl(rv, F_SETFD, FD_CLOEXEC); + + return rv; +} +#else static int fuse_mount_fusermount(const char *mountpoint, struct mount_opts *mo, const char *opts, int quiet) @@ -497,6 +669,7 @@ static int fuse_mount_fusermount(const char *mountpoint, struct mount_opts *mo, return fd; } +#endif #ifndef O_CLOEXEC #define O_CLOEXEC 0 ---