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style(9) / tidying for r348611

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MFC with:	r348611
Event:		Waterloo Hackathon 2019
This commit is contained in:
Ed Maste 2019-06-04 13:45:30 +00:00
parent 74cd06b42e
commit 004caac2d8
1 changed files with 12 additions and 12 deletions
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24
sys/kern/kern_mib.c
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@ -482,9 +482,9 @@ SYSCTL_PROC(_kern, KERN_OSRELDATE, osreldate,
NULL, 0, sysctl_osreldate, "I", "Kernel release date");
/*
* The build-id is copied from the ELF section .note.gnu.build-id. The linker
* script defines two variables to expose the beginning and end. LLVM
* currently uses a SHA-1 hash, but other formats can be supported by checking
* The build-id is copied from the ELF section .note.gnu.build-id. The linker
* script defines two variables to expose the beginning and end. LLVM
* currently uses a SHA-1 hash, but other formats can be supported by checking
* the length of the section.
*/
@ -503,23 +503,23 @@ sysctl_build_id(SYSCTL_HANDLER_ARGS)
/*
* The ELF note section has a four byte length for the vendor name,
* four byte length for the value, and a four byte vendor specific
* type. The name for the build id is "GNU\0". We skip the first 16
* bytes to read the build hash. We will return the remaining bytes up
* to 20 (SHA-1) hash size. If the hash happens to be a custom number
* of bytes we will pad the value with zeros, as the section should be
* four byte length for the value, and a four byte vendor specific
* type. The name for the build id is "GNU\0". We skip the first 16
* bytes to read the build hash. We will return the remaining bytes up
* to 20 (SHA-1) hash size. If the hash happens to be a custom number
* of bytes we will pad the value with zeros, as the section should be
* four byte aligned.
*/
if (sectionlen <= BUILD_ID_HEADER_LEN ||
sectionlen > (BUILD_ID_HEADER_LEN + BUILD_ID_HASH_MAXLEN)) {
return (ENOENT);
return (ENOENT);
}
hashlen = sectionlen - BUILD_ID_HEADER_LEN;
for (int i = 0; i < hashlen; i++) {
uint8_t c = __build_id_start[i+BUILD_ID_HEADER_LEN];
snprintf(&buf[2*i], 3, "%02x", c);
uint8_t c = __build_id_start[i+BUILD_ID_HEADER_LEN];
snprintf(&buf[2*i], 3, "%02x", c);
}
return (SYSCTL_OUT(req, buf, strlen(buf) + 1));