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Improve pledge() usability and consistency
- We now kill the program on violations like OpenBSD - We now print a message explaining which promise is needed - This change also fixes a linkage bug with thread local storage - Your sigaction() handlers should now be more thread safe A new `__pledge_mode` global has been introduced to make pledge() more customizable on Linux. For example: __attribute__((__constructor__)) static void init(void) { __pledge_mode = SECCOMP_RET_ERRNO | EPERM; } Can be used to restore our old permissive pledge() behavior.
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30 changed files with 713 additions and 86 deletions
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libc/sysv/consts/kern.h
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libc/sysv/consts/kern.h
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#ifndef COSMOPOLITAN_LIBC_SYSV_CONSTS_KERN_H_
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#define COSMOPOLITAN_LIBC_SYSV_CONSTS_KERN_H_
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#if !(__ASSEMBLER__ + __LINKER__ + 0)
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COSMOPOLITAN_C_START_
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#define KERN_SOH "\001"
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#define KERN_SOH_ASCII '\001'
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#define KERN_EMERG KERN_SOH "0"
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#define KERN_ALERT KERN_SOH "1"
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#define KERN_CRIT KERN_SOH "2"
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#define KERN_ERR KERN_SOH "3"
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#define KERN_WARNING KERN_SOH "4"
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#define KERN_NOTICE KERN_SOH "5"
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#define KERN_INFO KERN_SOH "6"
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#define KERN_DEBUG KERN_SOH "7"
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#define KERN_DEFAULT ""
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#define KERN_CONT KERN_SOH "c"
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COSMOPOLITAN_C_END_
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#endif /* !(__ASSEMBLER__ + __LINKER__ + 0) */
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#endif /* COSMOPOLITAN_LIBC_SYSV_CONSTS_KERN_H_ */
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