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util: Document limit-related functions

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We're going to change their behavior, so it's good to have the
current one documented to serve as baseline.

Signed-off-by: Andrea Bolognani <abologna@redhat.com>
Reviewed-by: Michal Privoznik <mprivozn@redhat.com>
This commit is contained in:
Andrea Bolognani 2021-02-23 19:28:17 +01:00
parent ab520635c4
commit 0f5e0b44d7
1 changed files with 46 additions and 0 deletions
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46
src/util/virprocess.c
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@ -739,6 +739,15 @@ virProcessPrLimit(pid_t pid G_GNUC_UNUSED,
#endif #endif
#if WITH_SETRLIMIT && defined(RLIMIT_MEMLOCK) #if WITH_SETRLIMIT && defined(RLIMIT_MEMLOCK)
/**
* virProcessSetMaxMemLock:
* @pid: process to be changed (0 for the current process)
* @bytes: new limit (0 for no change)
*
* Sets a new limit on the amount of locked memory for a process.
*
* Returns: 0 on success, <0 on failure.
*/
int int
virProcessSetMaxMemLock(pid_t pid, unsigned long long bytes) virProcessSetMaxMemLock(pid_t pid, unsigned long long bytes)
{ {
@ -791,6 +800,15 @@ virProcessSetMaxMemLock(pid_t pid G_GNUC_UNUSED, unsigned long long bytes)
#endif /* ! (WITH_SETRLIMIT && defined(RLIMIT_MEMLOCK)) */ #endif /* ! (WITH_SETRLIMIT && defined(RLIMIT_MEMLOCK)) */
#if WITH_GETRLIMIT && defined(RLIMIT_MEMLOCK) #if WITH_GETRLIMIT && defined(RLIMIT_MEMLOCK)
/**
* virProcessGetMaxMemLock:
* @pid: process to be queried (0 for the current process)
* @bytes: return location for the limit
*
* Obtain the current limit on the amount of locked memory for a process.
*
* Returns: 0 on success, <0 on failure.
*/
int int
virProcessGetMaxMemLock(pid_t pid, virProcessGetMaxMemLock(pid_t pid,
unsigned long long *bytes) unsigned long long *bytes)
@ -843,6 +861,16 @@ virProcessGetMaxMemLock(pid_t pid G_GNUC_UNUSED,
#endif /* ! (WITH_GETRLIMIT && defined(RLIMIT_MEMLOCK)) */ #endif /* ! (WITH_GETRLIMIT && defined(RLIMIT_MEMLOCK)) */
#if WITH_SETRLIMIT && defined(RLIMIT_NPROC) #if WITH_SETRLIMIT && defined(RLIMIT_NPROC)
/**
* virProcessSetMaxProcesses:
* @pid: process to be changed (0 for the current process)
* @procs: new limit (0 for no change)
*
* Sets a new limit on the amount of processes for the user the
* process is running as.
*
* Returns: 0 on success, <0 on failure.
*/
int int
virProcessSetMaxProcesses(pid_t pid, unsigned int procs) virProcessSetMaxProcesses(pid_t pid, unsigned int procs)
{ {
@ -883,6 +911,15 @@ virProcessSetMaxProcesses(pid_t pid G_GNUC_UNUSED, unsigned int procs)
#endif /* ! (WITH_SETRLIMIT && defined(RLIMIT_NPROC)) */ #endif /* ! (WITH_SETRLIMIT && defined(RLIMIT_NPROC)) */
#if WITH_SETRLIMIT && defined(RLIMIT_NOFILE) #if WITH_SETRLIMIT && defined(RLIMIT_NOFILE)
/**
* virProcessSetMaxFiles:
* @pid: process to be changed (0 for the current process)
* @files: new limit (0 for no change)
*
* Sets a new limit on the number of opened files for a process.
*
* Returns: 0 on success, <0 on failure.
*/
int int
virProcessSetMaxFiles(pid_t pid, unsigned int files) virProcessSetMaxFiles(pid_t pid, unsigned int files)
{ {
@ -931,6 +968,15 @@ virProcessSetMaxFiles(pid_t pid G_GNUC_UNUSED, unsigned int files)
#endif /* ! (WITH_SETRLIMIT && defined(RLIMIT_NOFILE)) */ #endif /* ! (WITH_SETRLIMIT && defined(RLIMIT_NOFILE)) */
#if WITH_SETRLIMIT && defined(RLIMIT_CORE) #if WITH_SETRLIMIT && defined(RLIMIT_CORE)
/**
* virProcessSetMaxCoreSize:
* @pid: process to be changed (0 for the current process)
* @bytes: new limit (0 to disable core dumps)
*
* Sets a new limit on the size of core dumps for a process.
*
* Returns: 0 on success, <0 on failure.
*/
int int
virProcessSetMaxCoreSize(pid_t pid, unsigned long long bytes) virProcessSetMaxCoreSize(pid_t pid, unsigned long long bytes)
{ {