6f3175d8a5
There were none: fcntl answered F_SETLK with EINVAL and flock was not a system call. Alpine's apk, which runs unmodified on SchOS through Alpine's own musl, locks its database before reading it and stopped there. kernel/fs/lock.c keeps one table of advisory locks keyed by (dev, inum): flock() for the whole file, owned by the open file description; F_SETLK/F_SETLKW/F_GETLK for byte ranges, owned by the process and released when it closes any descriptor on the file or exits; and the F_OFD_* forms, ranges owned by the description. flock and record locks do not see each other, as on Linux. Waiters sleep until any release and are interrupted by a signal. cmd/locktest checks each between a parent and a child, including range splitting, F_GETLK's report, and a blocked waiter being woken. shell.nix gains pkg-config, meson, ninja, m4, bison, flex and xz, for the X ports. Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com> Claude-Session: https://claude.ai/code/session_01S1giNvrHTrPMPw7V6x1kQ4
67 lines
3.3 KiB
C
67 lines
3.3 KiB
C
// Error numbers, matching the Linux x86_64 ABI values so that musl-linked
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// programs interpret syscall failures correctly. Kernel code returns these
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// negated (e.g. `return -ENOSYS;`), exactly like Linux does internally.
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#ifndef SCHOS_ERRNO_H
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#define SCHOS_ERRNO_H
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#define EPERM 1 // Operation not permitted
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#define ENOENT 2 // No such file or directory
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#define ESRCH 3 // No such process
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#define EINTR 4 // Interrupted system call
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#define EIO 5 // I/O error
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#define ENXIO 6 // No such device or address
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#define E2BIG 7 // Argument list too long
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#define ENOEXEC 8 // Exec format error
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#define EBADF 9 // Bad file descriptor
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#define ECHILD 10 // No child processes
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#define EAGAIN 11 // Try again
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#define ENOMEM 12 // Out of memory
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#define EACCES 13 // Permission denied
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#define EFAULT 14 // Bad address
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#define ENOTBLK 15 // Block device required
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#define EBUSY 16 // Device or resource busy
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#define EEXIST 17 // File exists
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#define EXDEV 18 // Cross-device link
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#define ENODEV 19 // No such device
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#define ENOTDIR 20 // Not a directory
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#define EISDIR 21 // Is a directory
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#define EINVAL 22 // Invalid argument
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#define ENFILE 23 // File table overflow
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#define EMFILE 24 // Too many open files
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#define ENOTTY 25 // Not a typewriter
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#define EFBIG 27 // File too large
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#define ENOSPC 28 // No space left on device
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#define ESPIPE 29 // Illegal seek
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#define EROFS 30 // Read-only file system
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#define EMLINK 31 // Too many links
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#define EPIPE 32 // Broken pipe
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#define ERANGE 34 // Math result not representable
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#define ENAMETOOLONG 36 // File name too long
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#define ENOLCK 37 // No record locks available
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#define ENOSYS 38 // Function not implemented
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#define ENOTEMPTY 39 // Directory not empty
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#define ELOOP 40 // Too many symbolic links encountered
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// Sockets. Same Linux x86_64 values, so strerror() in a musl-linked program
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// prints the message the programmer expected rather than a neighbouring one.
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#define ENOTSOCK 88 // Socket operation on non-socket
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#define EDESTADDRREQ 89 // Destination address required
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#define EMSGSIZE 90 // Message too long
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#define EPROTOTYPE 91 // Protocol wrong type for socket
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#define ENOPROTOOPT 92 // Protocol not available
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#define EPROTONOSUPPORT 93 // Protocol not supported
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#define EOPNOTSUPP 95 // Operation not supported on transport endpoint
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#define EAFNOSUPPORT 97 // Address family not supported by protocol
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#define EADDRINUSE 98 // Address already in use
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#define EADDRNOTAVAIL 99 // Cannot assign requested address
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#define ECONNRESET 104 // Connection reset by peer
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#define EISCONN 106 // Transport endpoint is already connected
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#define ENODATA 61 // No data available -- no such attribute
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#define ENOBUFS 105 // No buffer space available
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#define ENOTSUP 95 // Operation not supported
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#define ENETDOWN 100 // Network is down
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#define ENETUNREACH 101 // Network is unreachable
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#define ENOTCONN 107 // Transport endpoint is not connected
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#define ECONNREFUSED 111 // Connection refused
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#endif // SCHOS_ERRNO_H
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