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Greatly expand system() shell code features

Browse source 
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
View file

@ -0,0 +1,42 @@
#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_ */

14
libc/sock/struct/cmsghdr.internal.h Normal file
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@ -0,0 +1,14 @@
#ifndef COSMOPOLITAN_LIBC_SOCK_STRUCT_CMSGHDR_INTERNAL_H_
#define COSMOPOLITAN_LIBC_SOCK_STRUCT_CMSGHDR_INTERNAL_H_
#if !(__ASSEMBLER__ + __LINKER__ + 0)
COSMOPOLITAN_C_START_
struct cmsghdr_bsd {
uint32_t cmsg_len;
int32_t cmsg_level;
int32_t cmsg_type;
};
COSMOPOLITAN_C_END_
#endif /* !(__ASSEMBLER__ + __LINKER__ + 0) */
#endif /* COSMOPOLITAN_LIBC_SOCK_STRUCT_CMSGHDR_INTERNAL_H_ */

6
libc/sock/struct/msghdr.h
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@ -8,9 +8,9 @@ struct msghdr { /* Linux+NT ABI */
void *msg_name; /* optional address */
uint32_t msg_namelen; /* size of msg_name */
struct iovec *msg_iov; /* scatter/gather array */
int msg_iovlen; /* iovec count */
void *msg_control; /* credentials and stuff */
uint32_t msg_controllen; /* size of msg_control */
int msg_iovlen; /* # elements in msg_iov */
void *msg_control; /* ancillary data c. cmsghdr */
uint32_t msg_controllen; /* ancillary data buffer len */
uint32_t __pad0; /* reconcile abi */
int msg_flags; /* MSG_XXX */
};

4
libc/sock/struct/sockaddr.h
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@ -41,8 +41,8 @@ int bind(int, const struct sockaddr *, uint32_t);
int connect(int, const struct sockaddr *, uint32_t);
int getsockname(int, struct sockaddr *, uint32_t *);
int getpeername(int, struct sockaddr *, uint32_t *);
ssize_t recvfrom(int, void *, size_t, uint32_t, struct sockaddr *, uint32_t *);
ssize_t sendto(int, const void *, size_t, uint32_t, const struct sockaddr *,
ssize_t recvfrom(int, void *, size_t, int, struct sockaddr *, uint32_t *);
ssize_t sendto(int, const void *, size_t, int, const struct sockaddr *,
uint32_t);
COSMOPOLITAN_C_END_