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Greatly expand system() shell code features

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The cosmopolitan command interpreter now has 13 builtin commands,
variable support, support for ; / && / || syntax, asynchronous support,
and plenty of unit tests with bug fixes.

This change fixes a bug in posix_spawn() with null envp arg. strace
logging now uses atomic writes for scatter functions. Breaking change
renaming GetCpuCount() to _getcpucount(). TurfWar is now updated to use
the new token bucket algorithm. WIN32 affinity masks now inherit across
fork() and execve().
This commit is contained in:
Justine Tunney 2022-10-11 21:06:27 -07:00
parent e7329b7cba
commit b41f91c658
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GPG key ID: BE714B4575D6E328
80 changed files with 1370 additions and 344 deletions
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42
libc/sock/struct/cmsghdr.h Normal file
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#ifndef COSMOPOLITAN_LIBC_SOCK_STRUCT_CMSGHDR_H_
#define COSMOPOLITAN_LIBC_SOCK_STRUCT_CMSGHDR_H_
#if !(__ASSEMBLER__ + __LINKER__ + 0)
COSMOPOLITAN_C_START_
#define CMSG_DATA(cmsg) ((unsigned char *)(((struct cmsghdr *)(cmsg)) + 1))
#define CMSG_FIRSTHDR(mhdr) \
((size_t)(mhdr)->msg_controllen >= sizeof(struct cmsghdr) \
? (struct cmsghdr *)(mhdr)->msg_control \
: (struct cmsghdr *)0)
#define CMSG_NXTHDR(mhdr, cmsg) \
((cmsg)->cmsg_len < sizeof(struct cmsghdr) || \
__CMSG_LEN(cmsg) + sizeof(struct cmsghdr) >= \
__MHDR_END(mhdr) - (unsigned char *)(cmsg) \
? 0 \
: (struct cmsghdr *)__CMSG_NEXT(cmsg))
#define CMSG_ALIGN(len) \
(((len) + sizeof(size_t) - 1) & (size_t) ~(sizeof(size_t) - 1))
#define CMSG_SPACE(len) (CMSG_ALIGN(len) + CMSG_ALIGN(sizeof(struct cmsghdr)))
#define CMSG_LEN(len) (CMSG_ALIGN(sizeof(struct cmsghdr)) + (len))
#define __CMSG_LEN(cmsg) \
(((cmsg)->cmsg_len + sizeof(long) - 1) & ~(long)(sizeof(long) - 1))
#define __CMSG_NEXT(cmsg) ((unsigned char *)(cmsg) + __CMSG_LEN(cmsg))
#define __MHDR_END(mhdr) \
((unsigned char *)(mhdr)->msg_control + (mhdr)->msg_controllen)
struct cmsghdr { /* linux abi */
uint32_t cmsg_len;
uint32_t __pad1;
int32_t cmsg_level;
int32_t cmsg_type;
};
COSMOPOLITAN_C_END_
#endif /* !(__ASSEMBLER__ + __LINKER__ + 0) */
#endif /* COSMOPOLITAN_LIBC_SOCK_STRUCT_CMSGHDR_H_ */